The prevalence of COVID-19 omicron strain BA.2.86 has more than tripled globally in four weeks, prompting the World Health Organization to name it a variant of concern.
Get the latest updates from the CDC on flu shot efficacy and the BA.2.86 COVID-19 variant. Early data indicates flu shots offer protection against severe illness
Lab tests suggest COVID-19 variant BA.2.86 may not be as transmissible or immune-evasive as initially believed. Results suggest updated shots slated to roll out later this month will be effective against the strain.
CDC updates risk assessment of distant relative COVID-19 strain BA.2.86. Detected in at least 4 US states, this strain has been circulating less than 1% of