Both H1N1 and COVID-19 spread across the U.S. faster and more unpredictably than early detection systems could keep up.
SAN FRANCISCO -- As California becomes the first U.S. state to adopt an "endemic" approach to COVID-19, we take a closer look at what becoming "endemic" means and if virus levels have truly ...
As the winter season continues, there's an increased chance of infections from COVID-19, influenza and respiratory syncytial virus. But, the U.S. Centers for Disease Control and Prevention predicted ...
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