This content can also be found in NIOSH Science Blog.
The COVID-19 pandemic has put unprecedented pressure on U.S. healthcare workers.Since the early days of the pandemic, there have been numerous reports of health care workers (HCPs) becoming infected, sometimes resulting in serious result and death. As of July 20, 2022, the U.S. has reported nearly 1 million cases of COVID-19 and more than 2,000 deaths to the CDC medical staff. At the same time, the increased workload and mental toll of caring for millions of critically ill patients has led to stress-related conditions, including Burnout for many HCPsThe emergency department (ED) is the place of care most feeling these stresses, as HCPs often treat patients whose infection status is unknown and perform procedures that may produce higher concentrations of infectious respiratory aerosols.
Therefore, it is encouraging to be able to highlight the results of a recently published prospective study study To assess the incidence of infection in a cohort of ED HCPs. The study by Mohr et al.through the existing CDC Cooperation Agreement And in the 20 weeks leading up to a COVID-19 vaccine, more than 1,600 HCPs working at 20 U.S. centers conducted research. The cohort was evenly divided among physicians or advanced practice providers (APPs; such as physician assistants and nurse practitioners), nurses, and nonclinical staff. Participants provided monthly viral testing (nasal) and serology samples and weekly exposure and procedure information. Based on the interval between serology and virus detection, the time interval of potential exposure was further analyzed for physician/app and individual nurse involvement in patient intubation or cardiac arrest care (i.e., potential aerosol-generating procedures), including confirmed or people with suspected COVID-19.
Within 20 weeks, 75 participants (4.5%) were infected with SARS-CoV-2. Physicians/APPs are not at high risk of infection compared to non-clinical workers. Nurses had the highest absolute risk of contracting SARS-CoV-2, but the relative risk did not reach statistical significance. Despite high overall adherence to the use of CDC-recommended personal protective equipment (PPE), there are still instances of misuse, and there is a wide range of PPE reuse. However, neither of these errors nor participation in patient intubation/cardiac arrest care was associated with SARS-CoV-2 infection in multivariate analysis. Associated with HCP infection are household SARS-CoV-2 exposure; hospital and community SARS-CoV-2 burden; community exposure; and non-use of masks in public.
Similar to another larger study Jacob and others, The study by Mohr et al shows that this is not limited to the ED, but is also being done at academic medical centers in 2020 before vaccinations are available.found that the occupational risk of COVID-19 to HCPs could be largely eliminated by Recommended Precautions. And Jacob et al. Research by Mohr et al has found that working in the emergency room is not associated with an increased risk of infection compared with other clinical and non-clinical staff. Exposure risk can be further characterized by prospectively tracking self-reported factors previously associated with coronavirus transmission. These include participation in patient intubation and cardiac arrest care, and non-compliance with PPE recommendations during these personal procedures or other clinical care activities.
Although the findings of Mohr et al. and Jacob et al. It is encouraging that the proposed interventions are effective in controlling the risk of SARS-CoV-2 transmission from direct patient care, both studies were conducted at academic medical centers, where infection prevention and occupational health expertise and capacity, As well as the availability and training of PPE, probably more than is found in all U.S. healthcare facilities. However, although the study of Mohr et al. Jacob et al focus only on ED. It does include HCPs from 100 affiliated regional outpatient locations, administrative locations, rehabilitation facilities, and skilled nursing facilities. Both studies involved volunteer HCPs, so their understanding and practice of infection prevention and safe healthcare work practices may be more advanced than the general healthcare workforce.
The findings of Mohr et al. and Jacob et al. Exposure to HCP in home and community settings has been shown to play an extremely important role in COVID-19 infection. Therefore, interventions such as vaccination that provide protection in both work and non-work settings are critical to prevent COVID-19 in HCPs. Nonetheless, the conclusions of Moore et al. These are encouraging from the standpoint of demonstrating how effective existing recommended practices are and protecting HCPs from occupational risks from emerging respiratory viruses, even before vaccines are available. These findings should double down on public health and healthcare infection prevention and occupational health efforts to ensure the practice prevalent in the academic setting studied by Mohr et al. and Jacob et al. Is the minimum standard for all U.S. health care institutions. Despite the rise of telemedicine, in-person care remains an important part of healthcare delivery, despite the study by Mohr et al. and Jacob et al. It is not specifically checked, and during times of high SARS-CoV-2 community burden, simply going out to an on-site workplace increases risk. Therefore, since HCPs are primarily frontline workers, these findings remind us how promoting community mitigation and uptake of vaccination measures is integral to protecting the healthcare and non-healthcare workforce.
L. Clifford MacDonaldMD, Deputy Director of Science, Department of Healthcare Quality Promotion, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention.
David Weissman, MD, Director, Division of Respiratory Health, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention.
Mohr NM, Krishnadasan A, Harland KK, Eyck PT, Mower W, Schrading WA, Montoy JC, McDonald LC, Kutty PK, Hesse E, Santibanez S, Weissman DN, Slev P, Talan DA for the ED network covered by the project. COVID-19 risks associated with patient care for emergency department personnel. PLoS One. 2022.
