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Assessing coronavirus disease 2019 (COVID-19) transmission to healthcare personnel: The global ACT-HCP case-control study.


ABSTRACT:

Objective

To characterize associations between exposures within and outside the medical workplace with healthcare personnel (HCP) SARS-CoV-2 infection, including the effect of various forms of respiratory protection.

Design

Case-control study.

Setting

We collected data from international participants via an online survey.

Participants

In total, 1,130 HCP (244 cases with laboratory-confirmed COVID-19, and 886 controls healthy throughout the pandemic) from 67 countries not meeting prespecified exclusion (ie, healthy but not working, missing workplace exposure data, COVID symptoms without lab confirmation) were included in this study.

Methods

Respondents were queried regarding workplace exposures, respiratory protection, and extra-occupational activities. Odds ratios for HCP infection were calculated using multivariable logistic regression and sensitivity analyses controlling for confounders and known biases.

Results

HCP infection was associated with non-aerosol-generating contact with COVID-19 patients (adjusted OR, 1.4; 95% CI, 1.04-1.9; P = .03) and extra-occupational exposures including gatherings of ?10 people, patronizing restaurants or bars, and public transportation (adjusted OR range, 3.1-16.2). Respirator use during aerosol-generating procedures (AGPs) was associated with lower odds of HCP infection (adjusted OR, 0.4; 95% CI, 0.2-0.8, P = .005), as was exposure to intensive care and dedicated COVID units, negative pressure rooms, and personal protective equipment (PPE) observers (adjusted OR range, 0.4-0.7).

Conclusions

COVID-19 transmission to HCP was associated with medical exposures currently considered lower-risk and multiple extra-occupational exposures, and exposures associated with proper use of appropriate PPE were protective. Closer scrutiny of infection control measures surrounding healthcare activities and medical settings considered lower risk, and continued awareness of the risks of public congregation, may reduce the incidence of HCP infection.

SUBMITTER: Lentz RJ 

PROVIDER: S-EPMC7542323 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature

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Publications

Assessing coronavirus disease 2019 (COVID-19) transmission to healthcare personnel: The global ACT-HCP case-control study.

Lentz Robert J RJ   Colt Henri H   Chen Heidi H   Cordovilla Rosa R   Popevic Spasoje S   Tahura Sarabon S   Candoli Piero P   Tomassetti Sara S   Meachery Gerard J GJ   Cohen Brandon P BP   Harris Bryan D BD   Talbot Thomas R TR   Maldonado Fabien F  

Infection control and hospital epidemiology 20200909 4


<h4>Objective</h4>To characterize associations between exposures within and outside the medical workplace with healthcare personnel (HCP) SARS-CoV-2 infection, including the effect of various forms of respiratory protection.<h4>Design</h4>Case-control study.<h4>Setting</h4>We collected data from international participants via an online survey.<h4>Participants</h4>In total, 1,130 HCP (244 cases with laboratory-confirmed COVID-19, and 886 controls healthy throughout the pandemic) from 67 countries  ...[more]

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