Throughout the COVID-19 pandemic in the US, counties adopted numerous nonpharmaceutical interventions, such as mask mandates and stay-at-home orders, to slow COVID-19 transmission and prevent ...

A nasal COVID-19 vaccine blocks transmission of the virus, according to an animal study. The findings suggest that vaccines delivered directly to the nose or mouth could play a critical role in ...

Elucidating human contact networks could help predict and prevent the transmission of SARS-CoV-2 and future pandemic threats. A new study from Scripps Research scientists and collaborators points to ...

However, levels in the Bay Area have still been very low since last fall.

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Fresh COVID-19 cases in Andhra Pradesh prompt experts to urge vaccination, early testing, mask use, and vigilance to protect ...

The recent reporting of two Covid-19-related deaths and eight active cases in Andhra Pradesh , along with isolated infections ...

A new Cleveland Clinic-led study published in The EMBO Journal shows that mild and asymptomatic SARS-CoV-2 infections can trigger immune responses in a pregnant individual that may cause serious ...

Dr. Pappas can be contacted at [email protected]. This letter was published on July 9, 2025, at NEJM.org. No potential conflict of interest relevant to this letter was reported. Zhang B, Thacker D, ...