Infected Healthcare Workers Research Articles

Urban-rural divide in COVID-19 infection and vaccination rates in healthcare workers in British Columbia, Canada.

Healthcare workers (HCWs) play a critical role in responding to the COVID-19 pandemic. Early in the pandemic, urban centres were hit hardest globally; rural areas gradually became more impacted. We compared COVID-19 infection and vaccine uptake in HCWs living in urban versus rural locations within, and between, two health regions in British Columbia (BC), Canada. We also analysed the impact of a vaccine mandate for HCWs. We tracked laboratory-confirmed SARS-CoV-2 infections, positivity rates and vaccine uptake in all 29,021 HCWs in Interior Health (IH) and all 24,634 HCWs in Vancouver Coastal Health (VCH), by occupation, age and home location, comparing to the general population in that region. We then evaluated the impact of infection rates as well as the mandate on vaccination uptake. While we found an association between vaccine uptake by HCWs and HCW COVID-19 rates in the preceding 2-week period, the higher rates of COVID-19 infection in some occupational groups did not lead to increased vaccination in these groups. By 27 October 2021, the date that unvaccinated HCWs were prohibited from providing healthcare, only 1.6% in VCH compared with 6.5% in IH remained unvaccinated. Rural workers in both areas had significantly higher unvaccinated rates compared with urban dwellers. Over 1800 workers, comprising 6.7% of rural HCWs and 3.6% of urban HCWs, remained unvaccinated and set to be terminated from their employment. While the mandate prompted a significant increase in uptake of second doses, the impact on the unvaccinated was less clear. As rural areas often suffer from under-staffing, loss of HCWs could have serious impacts on healthcare provision as well as on the livelihoods of unvaccinated HCWs. Greater efforts are needed to understand how to better address the drivers of rural-related vaccine hesitancy.

The Incidence Proportion of Sars-Cov-2 Infections and the Percentage of Deaths Among Infected Healthcare Workers in Poland

The Incidence Proportion of Sars-Cov-2 Infections and the Percentage of Deaths Among Infected Healthcare Workers in Poland

Damlacık Yolu ile Bulaşan Hastalıklarda Evde İzolasyon Deneyimleri ve Önemi

Healthcare workers, especially midwives and nurses who work in service units that require close contact with patients, such as delivery rooms and coronavirus disease-2019 clinics, are at high risk of being infected with the severe acute respiratory syndrome-coronavirus2. The virus can be transmitted and cause infections easily through physical contact and droplets. As the disease spread rapidly and infected many people throughout the world, it caused an unprecedented number of patients to be hospitalized and increased the need for medical treatment and care. This situation has led to an increase in the workload of health professionals working at all levels in the hospitals, especially midwives and nurses, and in the risk of transmission among infected patients and healthcare workers. This case report aimed to share the self-isolation measures taken at home by a hospital manager during the period after suspected contact with an infected person and during the treatment process.

A cross-sectional study on coping strategies of frontline healthcare workers amid the COVID-19 pandemic in a developing country.

Frontline healthcare workers encountered a heightened susceptibility to negative psychological symptoms and behavioral shifts in light of the coronavirus disease 2019 pandemic. This study determined the coping strategies adopted by frontline healthcare workers in Ghana as well as assessed any differences based on demographics, job title, and ranking in four coronavirus disease 2019-designated centers in the Greater Accra region of Ghana. Using a hospital-based, mixed-method approach, the study was conducted between May 2021 and September 2021. A total of 94 frontline healthcare workers were randomly sampled and given a self-administered questionnaire, while 13 healthcare workers took in-depth interviews. Data from the survey were analyzed using both IBM SPSS and IBM AMOS and the interview data were transcribed verbatim and coded using thematic analysis. The study revealed that coronavirus disease 2019 has affected the psycho-social life of frontline healthcare workers mainly in the form of depression, anxiety, and stress. The three main coping strategies adopted by frontline healthcare workers include personal preventative measures (most dominant), seeking external expert support, and obtaining institutional support. While healthcare workers within the age group 30-39 years were found most compliant with the adoption of personal preventive measures and those below 30 years were found least compliant. This study concludes that frontline healthcare workers have been affected by a considerable level of anxiety, stress, and depression during the coronavirus disease 2019 pandemic. The study recommends a robust psychological support system at various levels of health care and an Employee Assistance Program with access to a 24-h hotline counseling service for frontline healthcare workers, continuous personal protective equipment provision, regular evidence-based updates on the management of coronavirus disease 2019 patients, and increased commitment from the government in addressing the medical needs of infected frontline healthcare workers.

Effectiveness of the BNT162b2 mRNA Covid-19 vaccine in Spanish healthcare workers

IntroductionFrontline health care workers (HCW) have higher risk than the general population to become infected by SARS.CoV.2, so they were a priority group for Covid-19 vaccine administration. We compared the incidence and prevalence of HCW infected pre-and post-vaccination with the BNT162b2 mRNA COVID-19 vaccine. Material and methodsProspective observational study carried out between 01/12/20 and 07/03/21 in La Paz University Hospital, Madrid (Spain). SARS.CoV.2 positive cases in HCW after vaccination were collected and compared to those hospitalized COVID-19 patients at the same hospital. ResultsTwo weeks after finishing the first round of vaccinations daily new cases of HCW infections (symptomatic and asymptomatic) decreased substantially and cumulative cases of infected HCW and hospitalized COVID-19 patients started to diverge. No new positive cases of HCW infection were registered seven days after the second dose of BNT162b2 mRNA COVID-19 vaccine. ConclusionsBNT162b2 mRNA COVID-19 vaccine is highly effective in Spanish HCW.

Clinico-epidemiological profile and outcome of infected health care workers during the three consecutive waves of COVID-19 pandemic: a longitudinal cohort study.

Health care workers are considered as high-risk population, who deal with many unknown, undiagnosed, and subclinical infectious diseases in their daily life. Currently, the COVID-19 pandemic posed as an add-on burden for these frontline workers in all aspects. Although, many adverse physical and mental effects of pandemic among health care workers (HCWs) were discussed worldwide, a long-term study for delayed complications needed to be explored. The study evaluates and compares three waves of the pandemic in various aspects such as the incidence, prevalence, severity, risk factors, and variations in the pattern of COVID-19 infection, impact of vaccination, and post-infection complications among the HCWs. A longitudinal observational study was carried out over a period of 2 years and another 6 months for follow-up. The study included all HCWs who tested positive in any one wave of COVID-19 pandemic with any one of the confirmed COVID-19 test. Each COVID-19-affected HCW was followed up through telephone calls and direct interviews conducted at the study site. Admission details and other background details of the study population were collected from the hospital records. A total of 968 HCWs were COVID-19 positive in any of the three waves, and highest incidence (53.00%) was caused by the Omicron variant. High severity and hospitalization was observed in the first wave (no vaccination) and fully immunized personnel were found to be out of danger of being hospitalized during all succeeding waves (chi-square value: 87.04, p < 0.05). Predictors such as female gender, occupational exposure, and comorbid status were identified as possible risk factors for infection. A total of 70 HCWs reported with 104 complications, of which chronic diseases such as new onset of diabetes (n = 3), cardiovascular events (n = 8), worsening of preexisting comorbidities (n = 8), etc. were found out. This study proves the benefit of being immunized rather than the risk of being infected. This study documents that immunization impacted complication and hospitalization rates of COVID-19 infection. This evidence may help in tackling vaccine hesitancy across the nations.

Healthcare workers' infection risk perceptions of aerosol-generating procedures and affective response.

To understand healthcare worker (HCW) perceptions of infection risk associated with aerosol-generating procedures (AGPs) and their affective response to performing AGPs. Systematic review. Systematic searches of PubMed, CINHAL Plus, and Scopus were conducted using combinations of selected keywords and synonyms. To reduce bias, titles and abstracts were screened for eligibility by 2 independent reviewers. Also, 2 independent reviewers extracted data from each eligible record. Discrepancies were discussed until consensus was reached. In total, 16 reports from across the globe were included in this review. Findings suggest that AGPs are generally perceived to place HCWs at high risk of becoming infected with respiratory pathogens and that this perception stimulates a negative affective response and hesitancy to participate in the procedures. AGP risk perception are complex and context dependent but have important influences on HCW infection control practices, decision to participate in AGPs, emotional welfare, and workplace satisfaction. New and unfamiliar hazards paired with uncertainty lead to fear and anxiety about personal and others' safety. These fears may create a psychological burden conducive to burnout. Empirical research is needed to thoroughly understand the interplay between HCW risk perceptions of distinct AGPs, their affective responses to conducting these procedures under various conditions, and their resulting decision to participate in these procedures. Results from such studies are essential for advancing clinical practice; they point to methods for mitigating provider distress and better recommendations for when and how to conduct AGPs.

Association between COVID-19 Post-infection and Work Capacity among Healthcare Workers in the National Referral Hospital in Indonesia.

Patients who had severe COVID-19 infection were thought to be one of the factors affecting the suitability of work capacity. Functional capacity can be measured by 6-minute walking test (6MWT). Some particular jobs have a minimum functional capacity to be met. The aim of this research is to determine the relationship between severity of COVID-19 infection and work capacity among post-infected healthcare workers in the National Referral Hospital. A cross-sectional study among healthcare workers who had COVID-19 infection from June to July 2021, and had undergone functional capacity examination from September to November 2021 was conducted. Data processing was carried out by collecting data from medical records of infected healthcare workers. Bivariate analysis statistic test was done to determine the association between degree of severity and work capacity. Determination of the suitability of work capacity was done by comparing the results of the functional capacity examination with the minimum estimated matabolic equivalents (METs) needs of workers. A total of 102 employees data from ages 25 to 58 years were collected. The result showed that 81 employees had unsuitable work capacity with most of them coming from the mild infected group (83.3%). There is no significant relationship (p>0.05) between age, gender, BMI, sequelae, comorbidities, and degree of severity of COVID-19 infection and work capacity among healthcare workers. Even though there is no signficant relationship between severity of COVID-19 and work capacity, this research shows there are more than 50% post-infected healthcare workers who have unsuitable work capacity.

1923. Outcomes of the adsorbed Sinovac CoronaVac COVID-19 inactivated vaccine among the employee recipients in St. Luke’s Medical Center Quezon City: an observational cohort study

Abstract Background Of the nine COVID-19 vaccines, the inactivated vaccine named CoronaVac, containing HB02 strain of SARS-CoV-2 created from Vero cells, created by the manufacturing company Sinovac was the first vaccine to arrive and be distributed in the Philippines, primarily in the private and government hospitals in Metro Manila. It is therefore important to determine the vaccine’s effectiveness and safety among its recipients, including the frontline healthcare workers (HCWs). Methods This was an observational cohort study which included HCWs from a tertiary hospital who have received one and/or two doses of CoronaVac from March 2021. The primary outcome of the study was to determine the clinical effectiveness of the vaccine in reducing risk of COVID-19 infection. The secondary outcome was the safety endpoint of the study vaccine. Results Out of the 2954 CoronaVac vaccinees, a total of 368 HCWs have been infected with SARS-CoV-2. 146 (4.94%) recipients have been infected with COVID-19 after receiving their first dose, while 222 (7.51%) tested positive after the second dose. 179 recipients reported of adverse reactions following immunization, with majority of these HCWs experiencing minor symptoms. The relative risk for COVID-19 infection among those given was at 15.7%, indicating the clinical effectiveness of the said vaccine. Receiving CoronaVac vaccine will reduce the risk of COVID-19 infection by 84.3%. Table 3.Percentage of infected HCWs in SLMC-QC post-vaccination of CoronaVac Out of the 2954 CoronaVac vaccinees from SLMC, a total of 368 HCWs have been infected with SARS-CoV-2 after receiving either their first or second dose of CoronaVac vaccine from March to December 2021. 146 (4.94%) recipients have been infected with COVID-19 after receiving their first dose, while 222 (7.51%) participants tested positive for SARS-CoV-2 after completing two doses of the inactivated vaccine (Table 3). Meanwhile, during the observation period after the 2nd dose of the vaccine, there were more reported cases of COVID-19. From a total of 222 (60.6%) COVID-19 confirmed cases after receiving their second dose of Sinovac, 33 were asymptomatic, while 176 recipients acquired mild infection and 12 participants had moderate COVID-19 infection. There was one case of severe COVID-19 and no cases of critical COVID-19 after completion of 2 doses among the HCWs (Figure 1). Based on this information, the researchers have computed for the relative risk (RR) for acquiring COVID-19 (Table 9). In the unvaccinated group, the risk for COVID-19 infection was reported at 79.5%, while the computed risk for COVID-19 among the treatment group, or those who received CoronaVac, was at 12.5%. Moreover, the relative risk for COVID-19 infection when given SINOVAC vaccine was at 15%, with relative risk reduction (RRR) of 84.3% and an absolute risk reduction (ARR) 67% from baseline. Conclusion CoronaVac vaccine is clinically effective in reducing the risk and severity of COVID-19 infection among HCWs in the study institution. Likewise, this inactivated vaccine can be safely given to individuals who are eligible to receive COVID-19 vaccine. Disclosures All Authors: No reported disclosures.

COVID-19 among health care workers and their impact on the health care system in a teaching hospital in Pakistan: A cross sectional observational study.

Health care workers (HCWs) are thought to be high-risk population for acquiring coronavirus disease (COVID-19). The COVID-19 emergence has had a profound effect on healthcare system. We sought to investigate the COVID-19 among HCWs and their effects on the healthcare system. A cross sectional observational study was conducted at Timergara teaching hospital. The study included HCWs with positive real time polymerase chain reaction (Q-PCR) for severe acute respiratory syndrome coronavirus (SARS-CoV-2). The study duration was from April to September, 2020. The demographic profile of each recruited subject was collected through structured interview. The patient's admissions to hospital were collected for the 5 months before (October 2019-February 2020) and 5 months after lockdown (March-July 2020). A total of 72 out of 689 (10%) HCWs were tested positive for SARS-CoV-2, of whom 83% were front-liners. The majority were male (72%), with comorbidities (14%) and no mortality. The structured interview of all participants showed that the healthcare setting was the major possible source of infection (97%). The patient admissions into the hospital were reduced by 42% during lockdown than prelockdown period. The patients admission was significantly decreased in the medical ward during lockdown (60% decrease; p < 0.01) with slightly similar trends in other departments. In conclusion, we found increased risk of COVID-19 for front-line HCWs. Lack of mortality was the favorable outcome. Lack of replacing the infected HCWs possibly explained the marked decrease in hospital admissions, and potential inadequate healthcare delivery during the lockdown. Understanding SARS-CoV-2 among HCWs and their impact on health-care system will be crucial for countries under COVID-19 crises or in case of future pandemic to deliver proper health services.

Pre-Endoscopy real-time PCR testing for SARS-CoV2 does not reduce health care workers infection and is associated with a higher reduction of endoscopic activity in an outpatient setting.

The role of pre-procedure SARS-CoV2 testing in digestive endoscopy is still debated. AGA guidelines recommend against pre-procedure testing considering low prevalence of SARS- CoV2 infection in the general population and low incidence of infection among endoscopy units Health Care Workers (HCWs). However, no studies have compared pre-procedure testing associated to symptom screening vs. symptom screening alone in reducing the risk of infection for HCWs. Main aim of the present study is to compare the risk of infection for HCWs in different Endoscopy Units adopting different pre-endoscopy screening and operating in two nearby hospital of the same region in Northern Italy in pre-vaccination period. For outpatients in the Endoscopy Unit of Trento (Unit 1) only pre-procedure symptom screening was performed, while in the Endoscopy Unit of Bolzano (Unit 2) pre-procedure symptom screening and negative pre-procedure real-time PCR were requested. Secondary aims were to assess the impact of pre-procedure real-time PCR testing on endoscopic activity and diagnostic delay. Retrospective data collection on a prospectively maintained database was performed, including outpatient endoscopy procedures performed between June 1st 2020 and February 28th 2021 in Unit 1 and Unit 2. No differences in terms of infection rate in HCWs have been identified in Unit 1 and Unit 2 (9.0 vs. 19.3% P=0.2) over a nine-month period. Moreover, in the unit performing pre- procedure real-time PCR before endoscopy a significantly higher reduction in endoscopic activity has been recorded (61.9% vs. 53.4%; P<0.01). In patients with positive real-time PCR, endoscopy was performed with a mean delay of 61.7 days (range 9-294) and 22.5% of them were lost at follow-up and did not undergo any endoscopic procedure in the following 12 months. This study supports the AGA recommendation suggesting that pre-endoscopy real-time PCR is an expensive and time-consuming procedure without proven benefits in an outpatient setting.

Healthcare-Associated Infections (HAIs): Challenges and Measures Taken by the Radiology Department to Control Infection Transmission.

Infections contracted during healthcare delivery in a hospital or ambulatory setting are collectively referred to as healthcare-associated infections (HAIs). Healthcare workers and patients alike are vulnerable to serious problems as a result of the risk of HAIs. In the healthcare system, HAIs are considered among the most common and serious health problems. However, the occurrence of HAIs differs between different types of clinical departments within the hospital. Recently, the risk of HAIs has been increasing in radiology departments globally due to the central role of radiology in guiding clinical decisions for the diagnosis, treatment, and monitoring of different diseases from almost all medical specialties. The radiology department is particularly vulnerable to HAIs because it serves as a transit hub for infected patients, non-infected patients, and healthcare workers. Furthermore, as the number of patients referred to radiology and the length of patient contact time has increased, thanks to modern imaging techniques such as computed tomography and magnetic resonance imaging, the risk of HAIs has also increased significantly. With the increasing use of interventional radiological procedures, patients and healthcare workers face a potentially greater risk of contracting HAIs due to the invasive nature of such procedures. Although not exhaustive, we attempted through a literature search to provide a general overview of infection prevention and control practices, address HAIs in the radiology departments, and highlight the challenges and measures taken to control infection transmission in the radiology departments.

Comparative Effectiveness of Mask Type in Preventing SARS-CoV-2 in Health Care Workers: Uncertainty Persists.

Comparative Effectiveness of Mask Type in Preventing SARS-CoV-2 in Health Care Workers: Uncertainty Persists.

Infection of healthcare workers despite a high vaccination rate during the fifth wave of COVID-19 due to Omicron variant in Hong Kong

No nosocomial infection was recorded in our healthcare workers (HCWs) during the early phase of the coronavirus disease 2019 (COVID-19) pandemic. With the emergence of the Omicron variant of increased transmissibility, infection in HCWs occurred as expected. We aimed to study the epidemiology of infection in HCWs and to describe the infection control measures during the outbreak of the Omicron variant. With daily rapid antigen testing and molecular confirmation test for COVID-19, infected HCWs were interviewed by infection control nurses (ICNs) to investigate the potential source of infection. The epidemiology of COVID-19 in Hong Kong served as reference. During the fifth wave of COVID-19 (31 December 2021 to 31 May 2022), 1,200,068 cases were reported (incidence 95 times higher than in preceding waves in Hong Kong; 162,103 vs 1,707 per million population respectively, p<0.001). The proportion of infected HCWs was significantly higher than that of the general population (24.9%, 1,607/6,452 vs 16.2%, 12,000,068/7,403,100 respectively; p<0.01). The proportion of infected non-clinical staff was significantly higher than that of clinical staff (31.8%, 536/1,687 vs 22.5%, 1,071/4,765 respectively; p<0.001). Of 82.8% (1,330/1,607) infected HCWs interviewed by ICNs, 99.5% (1,324/1,330) had been fully vaccinated; 49.5% (659/1,330) had no identifiable source; 40.7% (541/1,330) were probably infected from household members; 9.8% (130/1,330) had possible exposure to confirmed patients or HCWs, but no lapse in infection control measures or inappropriate use of personal protective equipment was recalled. Omicron variant is highly transmissible such that breakthrough infection occurred despite high level of vaccination.

Risk of transmission of COVID-19 from healthcare workers returning to work after a 5-day isolation, and kinetics of shedding of viable SARS-CoV-2 variant B.1.1.529 (Omicron)

There have been limited data on the risk of onward transmission from individuals with Omicron variant infections who return to work after a 5-day isolation. We evaluated the risk of transmission from healthcare workers (HCWs) with Omicron variant who returned to work after a 5-day isolation and the viable virus shedding kinetics. This investigation was performed in a tertiary care hospital, Seoul, South Korea. In a secondary transmission study, we retrospectively reviewed the data of HCWs confirmed as COVID-19 from March 14 to April 3, 2022 in units with 5 or more COVID-19-infected HCWs per week. In the viral shedding kinetics study, HCWs with Omicron variant infection who agreed with daily saliva sampling were enrolled between February and March, 2022. Of the 248 HCWs who were diagnosed with COVID-19 within 5 days of the return of an infected HCW, 18 (7%) had contact with the returned HCW within 1 to 5 days after their return. Of these, 9 (4%) had an epidemiologic link other than with the returning HCW, and 9 (4%) had contact with the returning HCW, without any other epidemiologic link. In the study of the kinetics of virus shedding (n=32), the median time from symptom onset to negative conversion of viable virus was 4 days (95% CI, 3 to 5 days). Our data suggest that the residual risk of virus transmission after 5 days of isolation following diagnosis or symptom onset is low.

The Italian policy of mandating SARS-CoV-2 vaccination for healthcare workers: Analysis of the policy processes and preliminary outcomes

BackgroundItaly experienced the first outbreak of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in Europe, and was among the most hardly hit European countries. Growing evidence suggests healthcare workers (HCWs) are at increased risk of SARS-CoV-2 infection. Infection in HCWs can lead to cross-transmission and increase community transmission. Italy was the first country in Europe to introduce mandatory vaccinations against SARS-CoV-2 for HCWs, on April 1, 2021. AimTo describe the policy processes and preliminary results of the introduction of compulsory vaccination against SARS-CoV-2 for HCWs in Italy. Results and conclusionIn Italy, the adoption of the policy was possible in the context of the public health and economic crisis resulting from the pandemic, with support from the scientific community and among favorable political conditions. Preliminary data suggest the policy has so far had a positive impact on increasing vaccine uptake and lowering infection rates among HCWs. Hopefully, the lack of serious vaccine-related adverse events and the growing evidence on vaccine effectiveness will progressively strengthen vaccine confidence among HCWs. In the context of a global pandemic, the Italian experience could provide insight for policymakers in other countries considering similar policies. Further, the ethical, legal, and policy challenges raised by the current public health emergency could be used to inform future pandemic preparedness plans.

Reduced neutralization against Delta, Gamma, Mu, and Omicron BA.1 variants of SARS-CoV-2 from previous non-Omicron infection.

The understanding of the host immune response to SARS-CoV-2 variants of concern is critical for improving diagnostics, therapy development, and vaccines. Here, we analyzed the level of neutralizing antibodies against SARS-CoV-2 D614G, Delta, Gamma, Mu, and Omicron variants in D614G infected healthcare workers during a follow-up up to 6months after recovery. We followed up 76 patients: 60.5% were women and 39.5% men. The 96.1% and 3.9% were symptomatic and asymptomatic, respectively. The most frequent symptoms were headache, myalgia, and cough. The 65.8%, 65.8%, and 92.1% of the infected individuals were positive for neutralizing antibodies against D614G variant at 2, 4, and 6months of follow-up, respectively. The 26.3%, 48.7% and 65.8% of patients neutralized Delta variant, 19.7%, 32.9% and 52.6% of patients neutralized Gamma, 7.9%, 19.7% and 44.7% of patients neutralized Mu, and 4.0%, 9.2% and 15.8% of patients neutralized Omicron. Low neutralization against Gamma and Mu variants was observed during the follow-up, and very low against the Omicron variant was detected during the same period. The median of neutralizing antibody titers against D614G and Delta variants increased significantly during the follow-up. An association was observed between the levels of neutralizing antibodies against D614G and Delta variants and the severity of the disease. Our results suggest an immune escape from neutralizing antibodies with the Omicron variant because of the many mutations localized in the S protein.

Modeling shield immunity to reduce COVID-19 transmission in long-term care facilities

PurposeNursing homes and long-term care facilities have experienced severe outbreaks and elevated mortality rates of COVID-19. When available, vaccination at-scale has helped drive a rapid reduction in severe cases. However, vaccination coverage remains incomplete among residents and staff, such that additional mitigation and prevention strategies are needed to reduce the ongoing risk of transmission. One such strategy is that of “shield immunity”, in which immune individuals modulate their contact rates and shield uninfected individuals from potentially risky interactions. MethodsHere, we adapt shield immunity principles to a network context, by using computational models to evaluate how restructured interactions between staff and residents affect SARS-CoV-2 epidemic dynamics. ResultsFirst, we identify a mitigation rewiring strategy that reassigns immune healthcare workers to infected residents, significantly reducing outbreak sizes given weekly testing and rewiring (48% reduction in the outbreak size). Second, we identify a preventative prewiring strategy in which susceptible healthcare workers are assigned to immunized residents. This preventative strategy reduces the risk and size of an outbreak via the inadvertent introduction of an infectious healthcare worker in a partially immunized population (44% reduction in the epidemic size). These mitigation levels derived from network-based interventions are similar to those derived from isolating infectious healthcare workers. ConclusionsThis modeling-based assessment of shield immunity provides further support for leveraging infection and immune status in network-based interventions to control and prevent the spread of COVID-19.

One year of COVID-19 pandemic: Health care workers’ infection rates and economical burden in medical facilities for oral and maxillofacial surgery

The aim of this study was to create an overview on the COVID-associated burdens faced by the oral and maxillofacial surgery (OMS) workforce during 1 year of the pandemic.OMS hospitals and private practices nationwide were surveyed regarding health care worker (HCW) screening, infection status, pre-interventional testing, personal protective equipment (PPE), and economic impact. Participants were recruited via the German Society for Oral and Maxillofacial Surgery.A total of 11 hospitals (416 employees) and 55 private practices (744 employees) participated. The HCW infection rate was significantly higher in private practices than in clinics (4.7% vs. 1.4%, p<0.01), although most infections in HCW occurred in private environment (hospitals 88.2%, private practice 66.7%). Pre-interventional testing was performed significantly less for outpatients in private practices than in hospitals (90.7% vs. 36.4%, p<0.01). Polymerase chain reaction (PCR) was used significantly more for inpatients in hospitals than in private practices (100.0% vs. 27.3%, p<0.01). FFP2/3 use rose significantly in hospitals (0% in second quarter vs. 46% in fourth quarter, p<0.05) and private practices (15% in second quarter vs. 38% in fourth quarter, p<0.01). The decrease in procedures (≤50%) was significantly higher in hospitals than in private practices (90.9% vs. 40.0%, p<0.01). Despite higher infection rates in private practices, declining procedures and revenue affected hospitals more.Future COVID-related measures must adjust the infrastructure especially for hospitals to prevent further straining of staff and finances.

Retrospective study of COVID-19 outcomes among healthcare workers in Rivers State, Nigeria

ObjectiveTo determine the illness severity and mortality among COVID-19-infected healthcare workers (HCWs).DesignA retrospective cohort study using population-level data. Secondary analysis was conducted on collated data from the Public Health Emergency...