The CDC said it has more than 90 cruise ships under investigation or observation as a result of COVID-19 cases. The agency did not disclose the number of infections.
An analysis of hundreds of COVID-19 cases suggests that face masks are most protective in specific circumstances, such as exposure to a person with COVID-19 that lasts for more than three hours or that takes place indoors1.
The U.S. Centers for Disease Control and Prevention's recommendations for the upcoming holiday season include the idea of using a window fan to keep air at an indoor party as fresh as possible. ...
Superspreader events that first seeded the coronavirus in the United States are keeping the pandemic smoldering, with experts pointing to human behavior and social circles as the main drivers.
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