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Saliva-based testing as a method for monitoring population immunity to SARS-CoV-2 infection

Saliva-based testing as a method for monitoring population immunity to SARS-CoV-2 infection Researchers in the United States have shown that saliva-based sampling could serve as an accurate and non-invasive alternative to blood sampling for monitoring people’s antibody responses following infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) or vaccination against the virus. The SARS-CoV-2 virus is the agent responsible for the coronavirus disease 2019 (COVID-19) pandemic that continues to pose a threat to global public health and has now caused more than 2.66 million deaths worldwide. Christopher Heaney from Johns Hopkins University in Baltimore and colleagues assessed the durability of immunoglobulin G (IgG) antibodies against three SARS-CoV-2 antigens in saliva samples collected from more than 200 people up to 8 months after they tested positive for the virus.

Study shows community exposure as greatest risk of COVID-19 infection in health care workers, not health care setting

Tags » ATLANTA – In a large study of U.S. health care workers in three states, researchers found that community exposure to COVID-19 was associated with COVID-19 infection in health care workers, but specific occupational activities in a hospital or health care setting were not. The findings were published in the Journal of the American Medical Association (JAMA) Network Open by researchers from Emory University in Atlanta, Johns Hopkins University in Baltimore, University of Maryland in Baltimore, Rush University in Chicago and the Centers for Disease Control and Prevention (CDC). More than 24,000 health care workers took part in the study between April and August 2020 across four large health care systems which collaborate in the CDC’s Prevention Epicenter Program and conduct innovative infection prevention research. Each site conducted voluntary COVID-19 antibody testing on its health care workers, as well as offered a questionnaire/survey on the employees’ occupational

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