Seroprevalence Of Chikungunya Research Articles

Chikungunya seroprevalence, force of infection, and prevalence of chronic disability after infection in endemic and epidemic settings: a systematic review, meta-analysis, and modelling study

Chikungunya is an arboviral disease transmitted by Aedes aegypti and Aedes albopictus mosquitoes with a growing global burden linked to climate change and globalisation. We aimed to estimate chikungunya seroprevalence, force of infection (FOI), and prevalence of related chronic disability and hospital admissions in endemic and epidemic settings. In this systematic review, meta-analysis, and modelling study, we searched PubMed, Ovid, and Web of Science for articles published from database inception until Sept 26, 2022, for prospective and retrospective cross-sectional studies that addressed serological chikungunya virus infection in any geographical region, age group, and population subgroup and for longitudinal prospective and retrospective cohort studies with data on chronic chikungunya or hospital admissions in people with chikungunya. We did a systematic review of studies on chikungunya seroprevalence and fitted catalytic models to each survey to estimate location-specific FOI (ie, the rate at which susceptible individuals acquire chikungunya infection). We performed a meta-analysis to estimate the proportion of symptomatic patients with laboratory-confirmed chikungunya who had chronic chikungunya or were admitted to hospital following infection. We used a random-effects model to assess the relationship between chronic sequelae and follow-up length using linear regression. The systematic review protocol is registered online on PROSPERO, CRD42022363102. We identified 60 studies with data on seroprevalence and chronic chikungunya symptoms done across 76 locations in 38 countries, and classified 17 (22%) of 76 locations as endemic settings and 59 (78%) as epidemic settings. The global long-term median annual FOI was 0·007 (95% uncertainty interval [UI] 0·003-0·010) and varied from 0·0001 (0·00004-0·0002) to 0·113 (0·07-0·20). The highest estimated median seroprevalence at age 10 years was in south Asia (8·0% [95% UI 6·5-9·6]), followed by Latin America and the Caribbean (7·8% [4·9-14·6]), whereas median seroprevalence was lowest in the Middle East (1·0% [0·5-1·9]). We estimated that 51% (95% CI 45-58) of people with laboratory-confirmed symptomatic chikungunya had chronic disability after infection and 4% (3-5) were admitted to hospital following infection. We inferred subnational heterogeneity in long-term average annual FOI and transmission dynamics and identified both endemic and epidemic settings across different countries. Brazil, Ethiopia, Malaysia, and India included both endemic and epidemic settings. Long-term average annual FOI was higher in epidemic settings than endemic settings. However, long-term cumulative incidence of chikungunya can be similar between large outbreaks in epidemic settings with a high FOI and endemic settings with a relatively low FOI. International Vaccine Institute.

Seroprevalence of Chikungunya in an Asymptomatic Adult Population in North and South Sulawesi, Indonesia.

Chikungunya (CHIK) is an emerging and reemerging infectious disease of public health importance in Indonesia. Information on the asymptomatic and true burden of CHIK virus (CHIKV) infections is limited. We assayed 1,092 healthy population samples, collected in North and South Sulawesi between 2019 and 2020, for antibodies against CHIKV. Blood samples were screened by IgM and IgG ELISAs and quantitative real-time reverse transcription polymerase chain reaction (qRT-PCR) assay. CHIKV IgG seroprevalence in North and South Sulawesi was 53.2% and 53.9%, respectively. The overall prevalence of anti-CHIKV IgM antibody was 12.9%. Molecular testing of blood donors revealed 0.66% (2/300) were positive for CHIKV qRT-PCR. Our study provides new insights into the CHIKV endemicity situation in the eastern part of Indonesia and warrants the need for further systematic surveillance considering there is no treatment or vaccine for CHIK infection.

Seroprevalence of Chikungunya and Zika virus in nonhuman primates: A systematic review and meta-analysis

Chikungunya virus (CHIKV) and Zika virus (ZIKV) are mosquito-borne viruses that have caused several outbreaks worldwide. Aedes mosquitoes transmit these viruses mainly through sylvatic and urban transmission cycles. In the sylvatic cycle, nonhuman primates (NHPs) can be infected with CHIKV and ZIKV and may play an essential role as reservoirs for virus transmission. To improve our knowledge on the role of NHPs in the sylvatic cycle, we performed a systematic review and meta-analysis study on the seroprevalence of CHIKV and ZIKV worldwide in NHPs. According to the PRISMA guidelines, 17 CHIKV and 16 ZIKV seroprevalence studies in NHPs from 3 online databases: PubMed, Embase, and Scopus were selected. Data were extracted, including location and study year, type of NHP, sample size, serological tests, and seropositivity. All included studies have high-quality scores, between 5 and 8, corresponding to the grading criteria. Seroprevalence estimation was pooled using the ‘meta’ package in the R statistical software. The estimated pooled seroprevalence of CHIKV and ZIKV in NHP was 17% (95%CI: 5–34, I2: 99%, p < 0.05) and 6% (95% CI: 2–12, I2: 92%, p < 0.05), respectively. Most of the NHPs tested were wild Old World monkeys. The subgroup was analyzed by continents; high seropositive CHIKV and ZIKV were found in African NHPs at 35% (95% CI 9–66.0, I2 = 100) and 16% (95% CI 1–44, I2 = 97), respectively. While NHPs in America have 7% (95% CI 0-28, I2 = 99) and 2% (95% CI 1-3, I2 = 54) against CHIKV and ZIKV. In Asia, 6% (95% CI: 5–34, I2 = 96) CHIKV seroprevalence and 7% (95% CI 0–20, I2 = 98) ZIKV seroprevalence were found in NHP. This study provides a comprehensive overview of the seroprevalence of CHIKV and ZIKV among NHPs in various regions.

The Seroprevalence and Hidden Burden of Chikungunya Endemicity and Malaria Mono- and Coinfection in Nigeria.

Background: Mosquito-borne infections are of global health concern because of their rapid spread and upsurge, which creates a risk for coinfections. Chikungunya, an arbovirus disease transmitted by Aedes aegypti or A. albopictus, and malaria, a parasitic disease transmitted by Anopheles gambiae, are prevalent in Nigeria and neighbouring countries, but their burden and possible coinfections are poorly understood. In this study, we investigated the seroprevalence, hidden burden and endemicity of chikungunya and malaria in three regions in Nigeria. Methods: A cross-sectional sero-survey was conducted on 871 participants in three regions of Nigeria. The samples were collected from outpatients employing simple random sampling. All serum sample analyses were performed using CHIKV virus-like particle recomLine Tropical Fever for the presence of arboviral antibody serological marker IgG immunoblot for chikungunya and malaria RDT (Rapid Diagnostic Test) for malaria parasites. Results: The seroprevalences of chikungunya and malaria mono-infection were 64.9% and 27.7%, respectively, while the coinfection seroprevalence was 71.9%. The central (69.5%) and northern (67.0%) regions showed more significant seroprevalences than the southern region (48.0%). The seroprevalence and the hidden burden of chikungunya and malaria infections varied across the three geographical regions. Conclusions: This study highlighted an unexpectedly high seroprevalence and hidden endemicity of chikungunya and a less surprising high malaria endemicity in three regions of Nigeria.

Seroprevalence of Chikungunya Virus Infection in an Urban Slum Population of Bangladesh: A Cross-Sectional Study

Background: Chikungunya virus is common in Bangladesh. Objective: The aim of the study was to estimate the post-outbreak seroprevalence of chikungunya virus infection in a Bangladeshi urban slum population. Methodology: From April to May 2018, a cross-sectional study was conducted in Bauniabadh, an underprivileged slum area in Mirpur Thana (subdistrict), Dhaka, Bangladesh. Randomly selected residents of this area were interviewed and screened for chikungunya IgM and IgG antibodies in sera using the immunochromatographic process. Results: Randomly selected 403 residents were recruited of which 200 cases were male and 203 cases were female. Chikungunya seroprevalence was 4.7% cases with males being more vulnerable than females (6.5% vs. 3.0% ). People over the age of 60 years were found to be infected at a higher rate (7.2%) than people between the ages of 18 and 59 years (5.5%) and those in the pediatric age group (1%). During the outbreak, 22% of patients with joint pain and 17% with fever were diagnosed as having chikungunya. Conclusion Urban slum people, especially the elderly, are affected by chikungunya outbreak in Bangladesh characterized by fever and joint pain. Journal of Current and Advance Medical Research, January 2022;9(1):3-8

Epidemiological and demographic characteristics of dengue and chikungunya infections over five years from 2014-2018, in Tamil Nadu, India

Background: An epidemiological, demographic and seasonal trend analysis of dengue and chikungunya seroprevalence was performed in five districts of Tamil Nadu during 2014-2018.Methods: Serum samples from the suspected patients were screened using IgM antibody ELISA.Results: Dengue and chikungunya seropositivity ranged from 17.9-68.2% and 14.9-58.3%, respectively. Dengue cases were reported in all the years with a spike in 2017. Highest number of chikungunya cases was in 2018. Dengue cases peaked in the cooler months following monsoon while chikungunya data for seasonal trend analysis was not sufficient. Both viral infections were found common in the people &gt;12 years, however, the difference of cases between males and females was not statistically significant.Conclusions: The findings of this study indicate that both chikungunya and dengue are actively circulating in the state and the state health department needs to direct their efforts not only to control the spread but also on the future preparedness to prevent outbreaks.

Seroprevalence of Chikungunya (CHIK) Infection during Non Epidemic Periods in Chennai, Southern India

Introduction: Chikungunya (CHIK) infection has caused many outbreaks in India with more than 13 lac people affected by the disease. Epidemics of CHIK infection occur during post monsoon period when there is a high vector density. Evidences on the prevalence of CHIK infection during non epidemic periods are limited. Aim: To determine the seroprevalence of CHIK infection during non epidemic periods among patients attending fever clinic in Chennai, Southern India. Materials and Methods: This cross-sectional study was done in 180 suspected cases of CHIK infection between the months of September 2014 and February 2015. A 5 mL of blood samples were collected from the suspected cases and serum was separated to detect for the presence of CHIK-IgM antibody by using CHIK-IgM antibody capture Enzyme Linked Immunosorbent Assay (ELISA) kit. Chi-square test was done to find out the statistical significance with p-value &lt;0.05 kept as statistically significant. Results: The seroprevalence of CHIK infection during non epidemic periods was found to be 5.5% (10/180). Fever and joint pain were the major complaints present in all the study population. All the seronegative cases were tested for the presence of other infections and it was found that 13% were positive for typhoid, 9% were positive for leptospirosis, 4% for malaria and 2% for dengue infections. Conclusion: There are no vaccines or specific medications available till date. Prevention is the only effective approach against the disease. Even though the prevalence of CHIK infection is low during non epidemic periods, strict vector control and elimination of mosquito breeding sites are very important in controlling the disease transmission.

Seroprevalence, spatial dispersion and factors associated with flavivirus and chikungunya infection in a risk area: a population-based seroprevalence study in Brazil

BackgroundThe State of Ceará, in Northeastern Brazil, suffers from a triple burden of arboviruses (dengue, Zika and chikungunya). We measured the seroprevalence of chikungunya, dengue and Zika and its associated factors in the population of Juazeiro do Norte, Southern Ceará State, Brazil.MethodsA cross-sectional study of analytical and spatial analysis was performed to estimate the seroprevalence of dengue, Zika and chikungunya, in the year 2018. Participants were tested for IgM and IgG against these three viruses. Those with IgM and/or IgG positive tests results were considered positive. Poisson regression was used to analyze the factors associated with positive cases, in the same way that the spatial analysis of positive cases was performed to verify whether the cases were grouped.ResultsOf the 404 participants, 25.0% (103/404) were positive for CHIKV, 92.0% (373/404) for flavivirus (dengue or Zika) and of these, 37.9% (153/404) samples were classified as probable dengue infection. Of those who reported having had an arbovirus in the past, positive CHIKV cases had 58.7% arthralgia (PR = 4.31; 95% CI: 2.06–9.03; p = 0.000) mainly in the hands, ankles and feet. Age over 60 years had a positive association with cases of flavivirus (PR = 1.29; 95% CI: 1.09–1.54; p = 0.000). Fever, muscle pain, joint pain and skin rash were the most reported symptoms (46.1, 41.0, 38.3 and 28.41%, respectively). The positive cases of chikungunya and dengue or Zika were grouped in space and the city center was most affected area.ConclusionsFour years after the introduction of CHIKV, where DENV has been in circulation for over 30 years, 1/4 of the population has already been exposed, showing the extent of the epidemic. The measured prevalence was much higher than that reported by local epidemiological surveillance.

Trends in Seroprevalence of Chikungunya Over a Period of Ten Years, in a Tertiary Care Centre in Mahabubnagar District

Trends in Seroprevalence of Chikungunya Over a Period of Ten Years, in a Tertiary Care Centre in Mahabubnagar District

Dengue and chikungunya seroprevalence among Qatari nationals and immigrants residing in Qatar.

The objective of this study is to characterize the seroprevalence of anti-dengue (DENV) and anti-chikungunya (CHIKV) antibodies among blood donors residing in Qatar who are Middle East and North Africa (MENA) nationals and non-nationals. Sera were collected from adult blood donors in Qatar from 2013 to 2016 and tested for anti-DENV and anti-CHIKV IgG using commercial microplate enzyme-linked immunosorbent assays. Age-specific seroprevalence was summarized by region/nationality: Asia (India, Philippines), Middle East (Iran, Jordan, Lebanon, Pakistan, Palestine, Syria, Yemen), North Africa (Egypt, Sudan), Qatar. The adjusted odds of anti-DENV and anti-CHIKV IgG seropositivity was estimated by logistic regression. Among 1,992 serum samples tested, Asian nationals had higher adjusted odds of being seropositive for anti-DENV antibodies compared to nationals of the Middle East (aOR 0.05, 95% CI 0.04–0.07), North Africa (aOR 0.14, 95% CI 0.10–0.20), and Qatar (aOR 0.01, 95% CI 0.01–0.03). Asian nationals also had higher adjusted odds of being seropositive for anti-CHIKV antibodies compared to those from the Middle East (aOR 0.14, 95% CI 0.07–0.27), North Africa (aOR 0.50, 95% CI 0.26–0.96), and Qatar (aOR 0.38, 95% CI 0.15–0.96). The adjusted odds of being anti-DENV seropositive was higher among anti-CHIKV seropositive adults, and vice versa (aOR 1.94, 95% CI 1.09–3.44), suggesting co-circulation of these viruses. DENV and CHIKV exposure is lower in Qatar and MENA nationals compared to Asian nationals suggesting a lower burden of DENV and CHIKV disease in the MENA. Antibodies to both viruses were detected in nationals from most MENA countries, supporting the need to better understand the regional epidemiology of these viruses.

Seroprevalence of Chikungunya during Outbreak in Dhaka, Bangladesh in 2017

Chikungunya (CHIK) infection is emergence public health problem globally including Bangladesh. It is the arthropod-borne disease of an alpha genus which is transmitted by mosquitoes bite. The virus was first isolated by Ross in Newala district of Tanzania in 1953. In 2017, an outbreak of chikungunya (CHIKV), has struck Bangladesh's capital of Dhaka, according to officials at the Institute of Epidemiology, Disease Control and Research (IEDCR). This study was aimed to know the seroprevalence, clinical presentations and seasonal trends of CHIK infection. This study was conducted in an Ibn Sina Diagnostic and Consultation center Uttara from April to November 2017. About 1526 serum samples were tested from suspected Chikungunya infected patients for IgM and IgG antibodies by immunochromatographic test (ICT) method. Out of the 1526 serum samples tested, 1179(77.27%) were seropositive for CHIK, among the seropositive 1103(72.28%) were IgM positive, 767 (50.26%) were IgG positive and 691(45.28%) were both IgM and IgG positive. The most 70.7% affected age group was 21-50 years. Females were more affected than males. A high percentage of chikungunya seropositive cases among suspected patients demand an early careful investigation. However, the seroprevalence of CHIK among the suspected cases was 72.28%. The infection had spread to new areas during this outbreak.

Hidden burden of chikungunya in North India; A prospective study in a tertiary care centre.

Arboviral diseases, such as chikungunya, dengue and now zika represent a public health problem, especially in tropical countries. Epidemiology of chikungunya and dengue is well known, including its social and climatic factors associated, but only few data and reports of chikungunya are available from North India. The clinical differentiation of chikungunya from dengue is no doubt challenging since both diseases can share clinical signs and symptoms leading to potential misdiagnosis of chikungunya in areas where dengue is endemic. The aim of this study was to know the seroprevalence, seasonal trends, clinical presentations of chikungunya and its co-infection with dengue virus. This was a prospective study conducted in Varanasi, from January to December 2016. All serum samples were tested for both chikungunya and dengue IgM antibodies by MAC ELISA test. Total of 186 samples, out of which 108 (58%) samples were total seropositive, 23 (12.37%) samples positive for chikungunya IgM antibodies, 57 (30.65%) samples positive for dengue and 28 (15.05%) samples positive for both chikungunya and dengue. The most affected age group was 20-30 years and males were more affected than females. A seasonal peak for chikungunya and its co-infection with dengue were seen in November. In India, the seroprevalence of chikungunya is increasing. India is a rapidly developing country where adequate sanitation is required. More aggressive intervention and vigilance by health authorities is needed to decrease vector born diseases.

Dengue and chikungunya seroprevalence in Gabonese infants prior to major outbreaks in 2007 and 2010: A sero-epidemiological study.

Apart from outbreak reports, little is known about the endemicity of dengue and chikungunya virus in African countries. We investigated serum samples collected in Gabon before major outbreaks in 2007 and 2010 in order to identify pre-outbreak-circulation of both viruses. Serum samples from Gabonese infants (162) were analyzed at 3, 9, 15 and 30 months of age by commercial ELISA for dengue and chikungunya IgG-antibodies. If samples were positive medical records of participants were analyzed for symptoms concordant with dengue and chikungunya infections during the time period of assumed seroconversion. IgG-antibodies against dengue were found in 12.3%, and IgG-antibodies against chikungunya in 0.6% of infants tested. Using the four measuring time points, we estimated corresponding incidences of 51/1.000 person-years and 2.5/1.000 person-years, respectively. Symptoms in positive-tested infants were mostly non-specific. Seropositivity suggests that both viruses circulated before the well-noticed outbreaks. Clinical diagnosis of dengue and chikungunya is difficult especially in infants, underscoring the need for accurate and reliable diagnostic tests as well as awareness of medical personnel. NCT00167843.

Seroprevalence of chikungunya in southern Odisha

Background:The emergence of chikungunya (CHIK) infection was observed in Odisha, India in 2006. Thereafter many cases with symptoms suggestive of CHIK were reported from different districts of Southern-Odisha. This study was aimed to know the seroprevalence, clinical presentations and seasonal trends of CHIK infection in this region.Materials and Methods:This study was conducted in a tertiary hospital of this region. Serum samples received in the Department of Microbiology from various districts of Southern-Odisha from April 2011 to March 2012 were included in the study. The samples were tested for CHIK and dengue Immunoglobin M (IgM) antibodies by enzyme-linked immunosorbent assay and malaria parasite by immunochromatographic test (ICT) method.Results:Out of the 678 serum samples tested, 174 were positive for CHIK, 15 for dengue and two samples were positive for both CHIK and dengue IgM antibodies. The most affected age group was 16-45 years. Females were more affected than males.Conclusion:The seroprevalence of CHIK among the suspected cases was 25.7%. Co-infection with CHIK and dengue was found to be 1.15%. The infection had spread to new areas during this outbreak.