CDC: Everyone over 6 months needs updated COVID vaccine
Jun 28, 2024
As a summer wave of COVID infections rolls across the country, US health officials have recommended that all Americans over the age of 6 months get one of the updated COVID vaccines when they become available...
Omicron BA.2 subvariant tied to less severe illness than delta, original omicron
Oct 28, 2022
Mortality rates are lower for omicron BA.2 than for delta variant and early omicron, investigators report.