Prevalence Of Infectious Diseases Research Articles

Advancing Immunization in Africa: Overcoming Challenges to Achieve the 2030 Global Immunization Targets.

African immunization programs are crucial in reducing the prevalence of infectious diseases and improving public health outcomes. This review provides an overview of the current status of immunization efforts in Africa, highlights key challenges, and offers recommendations to help the continent achieve the 2030 Global Immunization Goals. While progress has been made, significant challenges remain. For instance, the WHO African Region reports full immunization coverage at 56.5%, partial coverage at 35.1%, and zero immunization coverage at 8.4%. Between 2019 and 2021, approximately 67 million children in Africa did not receive routine vaccinations, with West and Central Africa particularly affected. DTP1 coverage remained stable at 80%, but DTP3 coverage saw a slight drop to 72% between 2021 and 2022. As of 2022, MCV1 coverage reached 69%, reflecting ongoing efforts against measles. Key barriers to vaccination include limited parental education, religious beliefs, inadequate healthcare systems, and vaccine hesitancy. Addressing these barriers requires community-driven approaches like door-to-door campaigns and mobile clinics. To reach the 2030 immunization targets, health systems must be strengthened, vaccine supply chains optimized, and financial resources-both domestic and international-expanded. The Immunization Agenda 2030 (IA2030) emphasizes data-driven decision-making, nation-ownership, and tailored strategies to overcome obstacles and raise immunization coverage among several demographic groups. Achieving these 2030 goals in Africa requires collaborative efforts to ensure equitable access to vaccines, address sociocultural challenges, and strengthen health system infrastructure.

Harnessing uncertainty: A deep mechanistic approach for cautious diagnostic and forecast of Bovine Respiratory Disease

Bovine Respiratory Disease (BRD) is a prevalent infectious disease of respiratory tract in cattle, presenting challenges in accurate diagnosis and forecasting due to the complex interactions of multiple risk factors. Common methods, including mathematical epidemiological models and data-driven approaches such as machine learning models, face limitations such as difficult parameter estimation or the need for data across all potential outcomes, which is challenging given the scarcity and noise in observing BRD processes. In response to these challenges, we introduce a novel approach known as the Bayesian Deep Mechanistic method. This method couples a data-driven model with a mathematical epidemiological model while accounting for uncertainties within the processes. By utilising 265 lung ultrasound videos as sensor data from 163 animals across 9 farms in France, we trained a Bayesian deep learning model to predict the infection status (infected or non-infected) of an entire batch of 12 animals, also providing associated confidence levels. These predictions, coupled with their confidence levels, were used to filter out highly uncertain diagnoses and diffuse uncertainties into the parameterisation of a mathematical epidemiological model to forecast the progression of infected animals. Our findings highlight that considering the confidence levels (or uncertainties) of predictions enhances both the diagnosis and forecasting of BRD. Uncertainty-aware diagnosis reduced errors to 32 %, outperforming traditional automatic diagnosis. Forecast relying on veterinarian diagnoses, considered the most confident, had a 23 % error, whilst forecast taking into account diagnosis uncertainties had a close 27.2 % error. Building upon uncertainty-awareness, our future research could explore integrating multiple types of sensor data, such as video surveillance, audio recordings, and environmental parameters, to provide a comprehensive evaluation of animal health, employing multi-modal methods for processing this diverse data.

The 3D-QSAR Study, Molecular Docking, and ADMET Analysis of Darunavir Derivatives of HIV-1 Protease Inhibitors

Background: Acquired Immunodeficiency Syndrome (AIDS) is one of most prevalent infectious diseases in the world , and HIV-1 protease (PR) is a vital target of drug design. Nowadays, three-dimensional quantitative structure-activity relationships (3D-QSAR) are applied to help design new protease inhibitions (PIs). Objective: The primary objective of this study is to apply the 3D-QSAR study to a series of 42 derivatives of Darunavir (DRV) and to design new molecules possessing high antivirus activity. Methods: Partial Least Squares (PLS) were used to cross-validate the dataset of compounds, and the optimal number of principal components (ONC), cross-validate coefficient (q²), standard error of estimate (SEE), non-cross-validated correlation coefficient (R²) and fisher test value (F) were calculated to assess model robustness. In this study, the CoMSIA-DAH model (q²=0.754, r²= 0.988, rpred2=0.57) possessed the highest predicted activity. Newly designed molecules were analyzed by docking studies with compound 25 taken as a template. Results: Within eight newly designed drugs, compound N02 possessed the highest antivirus activity (IC50=0.00461 nM) predicted by the CoMSIA-DAH model. The Surflex-Dock module of SYBYL-X 2.0 was used to affirm the predicted anti-PR activity of the newly designed compounds and the results of docking complex structure could be visualized. All newly designed molecules were in agreement with CSore above four and the docking study revealed that Asp29, Asp30, Ile50, Asp124, Asp128, Asp129 and Ile149 were critical residues in the process of inhibiting PR. Conclusion: One of the main aspects of this study is the successful design of a series of molecules with excellent investigatory values, which elucidates explicit quantitative structure-activity relationships of DRV derivatives and will provide significant suggestions for future pharmaceutical research.

Pollutants-mediated viral hepatitis in different types: assessment of different algorithms and time series models

The escalating frequency of environmental pollution incidents has raised significant concerns regarding the potential health impacts of pollutant fluctuations. Consequently, a comprehensive study on the role of pollutants in the prevalence of viral hepatitis is indispensable for the advancement of innovative prevention strategies. Monthly incidence rates of viral hepatitis from 2005 to 2020 were sourced from the Chinese Center for Disease Control and Prevention Infectious Disease Surveillance Information System. Pollution data spanning 2014–2020 were obtained from the National Oceanic and Atmospheric Administration (NOAA), encompassing pollutants such as CO, NO2, and O3. Time series analysis models, including seasonal auto-regressive integrated moving average (SARIMA), Holt-Winters model, and Generalized Additive Model (GAM), were employed to explore prediction and synergistic effects related to viral hepatitis. Spearman correlation analysis was utilized to identify pollutants suitable for inclusion in these models. Concurrently, machine learning (ML) algorithms were leveraged to refine the prediction of environmental pollutant levels. Finally, a weighted quantile sum (WQS) regression framework was developed to evaluate the singular and combined impacts of pollutants on viral hepatitis cases across different demographics, age groups, and environmental strata. The incidence of viral hepatitis in Beijing exhibited a declining trend, primarily characterized by HBV and HCV types. In predicting hepatitis prevalence trends, the Holt-Winters additive seasonal model outperformed the SARIMA multiplicative model ((1,1,0) (2,1,0) [12]). In the prediction of environmental pollutants, the SVM model demonstrated superior performance over the GPR model, particularly with Polynomial and Besseldot kernel functions. The combined pollutant risk effect on viral hepatitis was quantified as βWQS (95% CI) = 0.066 (0.018, 0.114). Among different groups, PM2.5 emerged as the most sensitive risk factor, notably impacting patients with HCV and HEV, as well as individuals aged 35–64. CO predominantly affected HAV patients, showing a risk effect of βWQS (95% CI) = − 0.0355 (− 0.0695, − 0.0016). Lower levels of PM2.5 and PM10 were associated with heightened risk of viral hepatitis incidence with a lag of five months, whereas elevated levels of PM2.5 (100–120 μg/m3) and CO correlated with increased hepatitis incidence risk with a lag of six months. The Holt-Winters model outperformed the SARIMA model in predicting the incidence of viral hepatitis. Among machine learning algorithms, SVM and GPR models demonstrated superior performance for analyzing pollutant data. Patients infected with HAV and HEV were primarily influenced by PM10 and CO, whereas SO2 and PM2.5 significantly impacted others. Individuals aged 35–64 years appeared particularly susceptible to these pollutants. Mixed pollutant exposures were found to affect the development of viral hepatitis with a notable lag of 5–6 months. These findings underscore the importance of long-term monitoring of pollutants in relation to viral hepatitis incidence.

Premarital Screening Uncovers Alarming Health Risks in Iraq

Background: Premarital screening programs, implemented globally since the 1970s, aim to improve reproductive health outcomes by identifying potential genetic and infectious risks before marriage. Specific Background: In July 2013, the Thi-Qar Governorate in Iraq introduced a premarital screening program to enhance health outcomes for pregnant women and their offspring. However, regional data on the efficacy and impact of such programs remain limited. Knowledge Gap: The prevalence and distribution of blood disorders and infectious diseases among couples in this region, and their implications for public health, have not been extensively documented. Aims: This study evaluates the pathophysiological status of couples undergoing premarital screening in Nasiriyah, Iraq, focusing on the prevalence of blood disorders and infectious diseases. Results: Data from 14,190 individuals (7095 couples) collected from January to December 2023 revealed significant health concerns: 34.40% had hemoglobin levels below 12 gm/dl, and notable percentages carried thalassemia and sickle cell anemia genes. Gender-specific analysis showed that all males tested positive for HIV, while significant proportions of females tested positive for HCV and T. palladium. No significant differences were found in the ABO blood system. Novelty: This study provides comprehensive, region-specific data on premarital screening outcomes in Iraq, highlighting significant disparities in disease prevalence between sexes and compared to other regions. Implications: The findings underscore the importance of enhancing premarital screening programs and integrating educational and preventive measures. Future research should include longitudinal studies to assess the long-term impact of these screenings and explore the benefits of incorporating genetic counseling to further mitigate hereditary and infectious risks. Highlights: High prevalence of blood disorders and infections in couples. Gender differences: all males positive for HIV, significant female infections. Need for improved education and prevention measures. Keywords: Premarital Screening, Hemoglobinopathies, Infectious Diseases, Nasiriyah, Iraq

Investigation of the effect of oral ivermectin on systemic inflammatory response and quality of life in scabies patients.

Scabies is a prevalent ectoparasitic infectious disease, caused by the mite Sarcoptes scabiei. As a consequence of the infestation, localised cutaneous inflammation, pruritus and polymorphic skin lesions develop. The primary symptoms of scabies manifest as hypersensitivity-like reactions and immune responses, the precise mechanisms of which remain poorly defined. The objective of this study was to evaluate the effects of oral ivermectin treatment in patients with scabies on the systemic immune response and the patient's quality of life (QoL). Patients admitted to the dermatology outpatient clinic and diagnosed with scabies were administered oral ivermectin treatment following diagnosis at week 0 and 2. Laboratory tests were conducted to measure complete blood count (CBC), erythrocyte sedimentation rate (ESR), and C-reactive protein (CRP) levels before treatment and at week 4. The systemic immune-inflammation index (SII) was calculated using the platelet, neutrophil and lymphocyte counts. Additionally, data pertaining to the Dermatological Life Quality Index (DLQI) were recorded. In 119 patients (51 males) diagnosed with scabies, increases in ESR, CRP, and SII values and decreases in inflammatory cell counts and DLQI scores were observed one month after treatment with oral ivermectin. The results of the study showed that the use of oral ivermectin, a scabicidal agent, triggered the inflammatory response and improved the QoL of the patients.

Evolving pathogen trends and spatial–temporal dynamics of hand, foot, and mouth disease in Fengxian District, Shanghai (2009–2022)

Hand, foot, and mouth disease (HFMD) is a prevalent acute infectious disease caused by enteroviruses, presenting substantial public health challenges in Shanghai, especially among children. The dynamic nature of HFMD’s etiology necessitates an ongoing evaluation of its epidemiological and virological trends to inform effective control strategies. This study aims to investigate the epidemiological patterns and viral evolution of HFMD in Fengxian District, Shanghai, China, with a focus on shifts in predominant viral strains over a 14-year period. We conducted a retrospective analysis of HFMD cases reported to the National Notifiable Disease Reporting System in Fengxian District from January 1, 2009 to December 31, 2022. Epidemiological trends, strain prevalence, and demographic impacts were assessed. A total of 27,272 HFMD cases were documented during the study period, with incidence showing pronounced seasonal fluctuations—peaking in spring and summer and a lesser peak in autumn. The disease incidence demonstrated significant positive correlations with several meteorological variables: daily average temperature (r = 0.30, P < 0.05), relative humidity (r = 0.20, P < 0.05), wind speed (r = 0.17, P < 0.05), and precipitation (r = 0.17, P < 0.05). Geographically, Nanqiao Town, Fengcheng Town, and Xidu Subdistrict reported the highest incidence rates. The demographic analysis revealed a male-to-female ratio of 1.60:1, predominantly affecting children aged 1–3 years. Prior to 2017, Enterovirus 71 (EV71) and Coxsackievirus A16 (CoxA16) were the primary detected strains; post-2017, Coxsackievirus A6 (CoxA6) emerged as the dominant strain. Statistical analysis confirmed significant year-to-year variations in virus detection rates, with decreasing trends for EV71 and other enteroviruses and an increasing trend for CoxA6. The findings indicate a distinct seasonal incidence of HFMD in Fengxian District. This study underscores the need for targeted public health education, enhanced surveillance, and proactive measures in childcare facilities to mitigate disease spread during peak seasons. Moreover, the evolving viral landscape warrants accelerated efforts in vaccine development against new strains to reduce HFMD incidence.

Fire safety status and evacuation of medical facility considering elevated oxygen concentrations

The prevalence of infectious diseases and rapid population expansion has increased the number of medical facilities. Due to the patients' limited mobility, these hospitals are more susceptible to fire disasters. Both Pathfinder and Fire Dynamic simulators were used to calculate the required safe evacuation time (RSET), heat release rate, visibility, temperature, CO, and oxygen effects on temperature, and available safe evacuation time (ASET). The safety egress of the medical hospital was then evaluated by comparing the available safe evacuation time (ASET) and required safe evacuation time (RSET). The simulation findings showed that the egress guides depend on delay time when delay time increases the egress guides drop. We also studied the importance of egress route decisions and suggested that at least 20 to 30 egress guides be on duty in the medical facility. The safety criteria for the medical facility have been proposed based on the delay time with the normalized egress guides. The high oxygen concentration in a hospital can put the medical staff and patients in danger and limit the required safe egress time to less than 150s. The proposed measures can be used to assess the evacuation safety of a typical medical hospital in use relatively quickly and efficiently.

Cryptic transmission and novel introduction of Dengue 1 and 2 genotypes in Colombia.

Dengue fever remains as a public health challenge in Colombia, standing as the most prevalent infectious disease in the country. The cyclic nature of dengue epidemics, occurring approximately every 3years, is intricately linked to meteorological events like El Niño Southern Oscillation (ENSO). Therefore, the Colombian system faces challenges in genomic surveillance. This study aimed to evaluate local dengue virus (DENV) transmission and genetic diversity in four Colombian departments with heterogeneous incidence patterns (department is first-level territorial units in Colombia). For this study, we processed 266 serum samples to identify DENV. Subsequently, we obtained 118 genome sequences by sequencing DENV genomes from serum samples of 134 patients infected with DENV-1 and DENV-2 serotypes. The predominant serotype was DENV-2 (108/143), with the Asian-American (AA) genotype (91/118) being the most prevalent one. Phylogenetic analysis revealed concurrent circulation of two lineages of both DENV-2 AA and DENV-1 V, suggesting ongoing genetic exchange with sequences from Venezuela and Cuba. The continuous migration of Venezuelan citizens into Colombia can contribute to this exchange, emphasizing the need for strengthened prevention measures in border areas. Notably, the time to most recent common ancestor analysis identified cryptic transmission of DENV-2 AA since approximately 2015, leading to the recent epidemic. This challenges the notion that major outbreaks are solely triggered by recent virus introductions, emphasizing the importance of active genomic surveillance. The study also highlighted the contrasting selection pressures on DENV-1 V and DENV-2 AA, with the latter experiencing positive selection, possibly influencing its transmissibility. The presence of a cosmopolitan genotype in Colombia, previously reported in Brazil and Peru, raises concerns about transmission routes, emphasizing the necessity for thorough DENV evolution studies. Despite limitations, the study underscores genomic epidemiology's crucial role in early detection and comprehension of DENV genotypes, recommending the use of advanced sequencing techniques as an early warning system to help prevent and control dengue outbreaks in Colombia and worldwide.

An Overview of Common Infectious Diseases in Children Under Five

Infectious diseases remain a significant concern for children under five, often leading to substantial morbidity and, in some cases, mortality. This review provides an overview of prevalent infectious diseases affecting this vulnerable age group, including Measles, Chickenpox, Common cold, Pertussis, Conjunctivitis, Eczema, Gastroenteritis, Influenza, Sore throat, Fever in children, Malaria, Meningococcal disease, and Urinary tract infection. Each condition is discussed in terms of its etiology, clinical presentation, diagnosis, treatment, and preventive strategies. Understanding the unique aspects of these diseases in young children is critical for effective management and prevention. Vaccination, improved hygiene practices, and early medical intervention play pivotal roles in reducing the incidence and impact of these infections. This comprehensive review aims to equip healthcare providers, caregivers, and policymakers with the knowledge needed to protect and promote the health of children under five. Key words Chickenpox, Common cold, Conjunctivitis, Eczema, Gastroenteritis, Infectious diseases, Influenza, Malaria, Measles, Meningococcal disease, Pertussis, Sore throat, Urinary tract infection.

Protection of children’s health in the environment of Russian emigration and the USSR in the conditions of the spread of infectious diseases in the 1920s–1930s

Introduction. The preservation of children’s health is an important state task, the success of which is largely determined by the socio-cultural context, traditions in the application of preventive measures and the provision of medical care. In this regard, it is indicative of the comparison of measures to preserve the health of schoolchildren in the “Russian schools” of the emigrant environment (on the example of schools in the Czechoslovakia and the Kingdom of Yugoslavia) and Soviet schools in the 1920s and 1930s in the conditions of the spread of infectious diseases. Materials and methods. The data sources were published reports of Russian educational institutions in exile, which contain information about the health of schoolchildren, data on the health of Soviet schoolchildren were obtained from collections of analytical works of the specified period. Results. The prevalence of infectious diseases in children among Russian emigration and in the USSR was comparable, with the exception of measles, cases of which were not recorded in emigrant educational institutions in the Czechoslovakia and the Kingdom of Yugoslavia. As the main preventive measures, disinfection and examinations were carried out, vaccinations were made. The living conditions of emigrants contributed to the spread of tuberculosis, the incidence of which among children of emigrants was higher than among the European population. Soviet and emigrant doctors agreed that the fight against infectious diseases should develop at the level of organized collectives (schools, kindergartens). Conclusion. Thus, emigrant doctors largely followed the medical traditions and experience that had developed in pre-revolutionary Russia. Nevertheless, the living conditions of emigrants and the lack of funds became factors that reduced the effectiveness of preventive measures and medical care. An important difference was that the events in the Soviet Union were carried out within the framework of the state policy on health protection, and in the emigrant environment were of a local nature, determined as a rule by the capabilities of specific educational institutions.

Self-reported tuberculosis in Ecuador’s prisons: an analysis of its prevalence and determinants in 2022

Purpose Despite the growing prison population in South America and the high prevalence of infectious diseases, there is limited evidence on the factors associated with self-reported tuberculosis (TB) in this population. This study aims to identify the factors associated with self-reported TB among inmates in all prisons across Ecuador. Design/methodology/approach The 2022 Prison Census was used. The presence of TB was self-reported based on the question: Has any doctor diagnosed you with any of the following diseases: Tuberculosis? Prevalence ratios (PR) were obtained using crude and multivariable models along with their 95% confidence intervals (CI) using a generalized linear model with random effect at the prison level to assess the association among the study variables. Findings The prevalence of self-reported TB was 4.7%. Socio-demographic factors (prisoners aged between 18 and 29 years and indigenous), clinical factors (human immunodeficiency virus [HIV] infection, diabetes and attempted suicide) and imprisonment characteristics (re-offender, having a medical check-up on admission and being incarcerated for 6 months or more) increased the prevalence of self-reported TB compared with their counterparts. Originality/value This study provides a detailed understanding of the factors contributing to the prevalence of self-reported TB in the prison population of Ecuador. The findings highlight the need for strategies focused on TB control through diagnosis and treatment, management of HIV, diabetes and malnutrition, as well as the restructuring of prison facilities. Implementing these measures is crucial for addressing the identified factors and improving inmate health conditions.

Yinqin Qingfei granules alleviate Mycoplasma pneumoniae pneumonia via inhibiting NLRP3 inflammasome-mediated macrophage pyroptosis.

Mycoplasma pneumoniae pneumonia (MPP) is a prevalent respiratory infectious disease in children. Given the increasing resistance of M. pneumoniae (MP) to macrolide antibiotics, the identification of new therapeutic agents is critical. Yinqin Qingfei granules (YQQFG), a Chinese patent medicine formulated specifically for pediatric MPP, lacks a clear explanation of its mechanism. The primary components of YQQFG were identified using LC-MS/MS. In vitro, RAW264.7 cells infected with MP underwent morphological examination via scanning electron microscopy. Drug-containing serum was prepared, and its intervention concentration was determined using the CCK-8 assay. The active components of YQQFG were molecularly docked with NLRP3 protein using Autodock Vina software. A RAW264.7 cell line overexpressing NLRP3 was created using lentivirus to pinpoint the target of YQQFG. In vivo, MPP model mice were established via nasal instillation of MP. Lung damage was assessed by lung index and H&E staining. Pyroptosis-associated protein levels in cells and lung tissue were measured by western blot, while interleukin (IL)-1β and IL-18 levels in cell supernatants and mouse serum were quantified using ELISA. Immunofluorescence double staining of lung tissue sections was conducted to assess the correlation between NLRP3 protein expression and macrophages. The expression of the community-acquired respiratory distress syndrome toxin (CARDS TX) was evaluated by qPCR. 25 effective components with favorable oral bioavailability were identified in YQQFG. Both in vitro and in vivo studies demonstrated that YQQFG substantially reduced the expression of the NLRP3/Caspase-1/GSDMD pathway, decreasing the release of IL-1β and IL-18, and inhibited MP exotoxin. Molecular docking indicated strong affinity between most YQQFG components and NLRP3 protein. Lentivirus transfection and immunofluorescence double staining confirmed that YQQFG significantly suppressed NLRP3 expression in macrophages, outperforming azithromycin (AZM). The combination of YQQFG and AZM yielded the optimal therapeutic effect for MPP. YQQFG mitigates inflammatory responses by suppressing NLRP3 inflammasome-mediated macrophage pyroptosis, thereby ameliorating MP-induced acute lung injury. YQQFG serves as an effective adjunct and alternative medication for pediatric MPP treatment.

Health conditions of migrant children and adolescents from Latin America and Caribe: A narrative review.

The presence of children and adolescents in migratory flows is growing in Latin America and the Caribbean. Little is known about migration's effects on these groups' health. This article aims to investigate the evidence available on the access and use of healthcare services by migrant children and adolescents in Latin America and the Caribbean. We seek to explore the role of social determinants of health at different levels in the health conditions of these groups. Also, to identify potential recommendations for healthcare systems and public policy to address them. For this purpose, a narrative review of 52 publications was carried out based on a search of scientific literature in the Web of Science and Google Scholar databases. Five relevant topics were identified: use of emergency care associated with lack of healthcare access, preventive services, and other social determinants of health; exposure to preventable infectious diseases; mental health; sexual and reproductive health; and vaccinations and dental health. We conclude that the evidence shows the need to address the inequities and disadvantages faced by migrant children from a perspective of social determinants of health and policies that consider health as a human right regardless of the migratory status of children and adolescents, as well as that of their parents or primary caregivers.

Hepatitis B Virus, Hepatitis C Virus, and Human Immunodeficiency Virus Infection Among Premarital Screening Individuals in Saudi Arabia.

Premarital screening is one of the most important strategies for preventing infectious diseases such as hepatitis B virus, hepatitis C virus, and human immunodeficiency virus in populations. This study aims to explore the prevalence of these viruses and their association with potential demographic factors among individuals undergoing premarital screening in Saudi Arabia. A cross-sectional study design using the National Healthy Marriage Program electronic registry in the Saudi Ministry of Health. Patients were selected from the premarital screening tests for the three blood-borne viruses. Data were obtained from January to August 2021 among 114,740 individuals. Hepatitis B virus infection showed the highest prevalence followed by hepatitis C and human immunodeficiency viruses. Among those who were infected, men had higher infectious disease prevalence than women. The central and western regions had the highest percentages of infection. The studied infections pose a continuous public health issue among premarital screening individuals in Saudi Arabia. This study identified important demographic risk factors for these diseases and highlighted the need for future strategies and long-term plans at the national level.

A case of early childhood caries from a Medieval site in Southern Portugal: a multidisciplinary approach.

Dental caries is the most prevalent chronic infectious disease during childhood both in historical and contemporary times, but research focused on the oral health of non-adults from the past is still scant. As such, this study proposes a multidisciplinary approach to the differential diagnosis of severe dental lesions in a medieval non-adult skeleton. The skeleton of a three-year-old child recovered in the medieval necropolis of Cacela Velha (Portugal) was studied through macroscopic, radiological, elemental and stable isotope analyses. This individual exhibited enamel destruction and dentine exposure in both the maxillary and mandibular teeth, with the latter also showing changes in coloration. Elemental analysis showed that his skull presented lower values of Si, Cl, and Ca and higher of Cu compared to the control, while the concentration of P and S were significantly lower in the teeth. Early childhood caries is the most probable diagnosis for the dental lesions observed, apparently stemming from a reticulate of factors that include potential malnutrition, and the consumption of sugars in complementary feeding - even though historical sources point to the scarcity of sugar in Portugal during most of the Middle Ages.

Comparative treatment of homeless persons with an infectious disease in the US emergency department setting: a retrospective approach

BackgroundResearch has long documented the increased emergency department usage by persons who are homeless compared with their housed counterparts, as well as an increased prevalence of infectious diseases. However, there...

Epidemiology of eye diseases in Bangladesh

Bangladesh is densely populated country in South Asia, faces significant challenges in eye health due to various socioeconomic, environmental, and healthcare access factors. Limited access to quality eye care services, poor hygiene practices, prevalence of infectious diseases, and a high burden of non-communicable diseases contribute to the prevalence of eye disorders in the region. This study aims to comprehensively analyze the prevalence, distribution, and risk factors associated with various eye diseases among the population of Bangladesh. A systematic review and meta-analysis were conducted to gather data on the epidemiology of eye diseases in Bangladesh. Published studies, national surveys, and reports from relevant health organizations were reviewed to compile data on the prevalence, distribution, and risk factors of common eye conditions, including cataracts, refractive errors, conjunctivitis, glaucoma, diabetic retinopathy, and age-related macular degeneration. The prevalence of eye diseases in Bangladesh is relatively high, with conditions such as refractive errors, cataracts, glaucoma, and corneal diseases being major concerns. Refractive errors, including myopia, hyperopia, and astigmatism, affect a substantial portion of the population, particularly among children and young adults. Cataracts, a leading cause of blindness worldwide, also pose a significant burden in Bangladesh, with prevalence increasing with age. While the prevalence of glaucoma in Bangladesh is lower compared to some other countries, the condition remains a cause of concern due to its impact on quality of life and the healthcare system. Diabetic retinopathy, a complication of diabetes mellitus, affects the retina and is a leading cause of vision loss and blindness globally in the elderly. In Bangladesh, the rising prevalence of diabetes, fueled by changing lifestyles and an aging population, has contributed to an increasing burden of diabetic retinopathy. Conjunctivitis is prevalent, particularly in densely populated urban areas and rural communities with limited access to clean water and sanitation facilities.Collaborative efforts involving government agencies, healthcare providers, non-governmental organizations, and the community are essential to effectively address the burden of eye diseases in Bangladesh. By implementing preventive measures and improving access to quality eye care services, it is possible to mitigate the impact of these eye diseases and improve visual health outcomes for the population.

Human Immunodeficiency Virus Co-Infection among Sickle Cell-Exposed Children in Kisumu County, Western Kenya

Globally, the high prevalence of infectious diseases, particularly HIV, and the possible interaction with sickle cell disease, has been of great public health concern. Kenya experiences a significant burden of HIV. Kisumu County in particular, exhibits unique epidemiological burden characterized by unprecedented high mortality 50%-90% among children with sickle cell disease,. This is coupled with high prevalence 17.5% of HIV/AIDS among its population, and high malaria endemicity with prevalence of 19%. The overarching aim of this study was to assess the HIV co-infection among sickle cell-exposed children in Kisumu County. The study adopted a retrospective systematic review. Study population comprised of the sickle cell-exposed children in Kisumu County with a sample size of 173. The study used both purposive and simple random sampling techniques. Majority 99.2% of the sample size participated. The prevalence of HIV among sickle cell-exposed children was 4.65% in Kisumu County. Majority 76.3% sickle cell-exposed children had hemoglobinopathies for sickle cell disease. Age was not statistically significant factor p-value= 0.414 complicating co-infection. A paltry one quarter 49 (28.48%) had attained fifth anniversary with close to a third 47 (27.33%) being only 7 months to one and half years old. Viral load was statistically significant p-value=0.046 in β-thalassemia co-infection. The study recommends enhancement of HIV screening and prevention efforts in this vulnerable population

Elucidating the conformational change of dengue envelope protein using the Markov state model

ABSTRACT Dengue virus, an arbovirus of genus flavivirus, is one of the most prevalent infectious disease causing organisms in the tropical environment leading to numerous deaths every year. The envelope protein plays a crucial role in the viral genome entry into the host cell. This is achieved through structure and oligomeric status change in the dengue envelope protein. The pre-fusion and post-fusion states’ structures of the dengue envelope protein are known although the pathway and intermediate structures involved in this process have remained in the dark till date. In this study, we have used targeted molecular dynamics (MD) simulation followed by conventional MD simulation and the Markov state model analysis to elucidate this pathway of change in conformation from the pre-fusion state to the post-fusion state. Intermediate conformations which may in the future serve as therapeutic targets have also been deduced from the Markov state model. This pathway determination may pave the way for the design of transition state analog inhibitors which prevent the dengue virus envelope protein from changing its conformation and thus establishing infection. The results obtained could lead to development of novel drugs to combat the viral infection.