COVID rebound is when COVID-19 symptoms return soon after they go away or a person registers a positive COVID-19 test result after testing negative for several days. COVID rebound can happen in people ...
Helen Branswell covers issues broadly related to infectious diseases, including outbreaks, preparedness, research, and vaccine development. Follow her on Mastodon and Bluesky. You can reach Helen on ...
Yearly Covid-19 Booster Recommendations in Canada, Europe, and Australia. Although the rapid development of multiple Covid-19 vaccines in 2020 represents a major scientific, medical, and regulatory ...
People in the United States can now order more free Covid-19 tests from the federal government as the country heads into respiratory virus season with high levels of the coronavirus already ...
COVID-19 variant BA.3.2 or "cicada" is not widely circulating in the U.S. yet, but based on trends in Europe, it may become more prominent. Most evidence comes from laboratory data, but there are no ...
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