ROCHESTER – While society is relaxing some as the COVID pandemic slows, people who are vulnerable to the virus are still worried about their risk of exposure. That’s a risk that has changed from the ...

With the rise of omicron came the fall of long-lasting protection from reinfection with the pandemic coronavirus SARS-CoV-2, according to a study published in Nature. Using population-wide data from ...

July 1 (Reuters) - Coronavirus vaccines tweaked to include the Omicron variant strain can improve protection when used as a booster, the European Medicines Agency and other global health regulators ...

The Omicron BA.4 and BA.5 subvariants of SARS-CoV-2 have proven to be stealthier at evading people’s immune defences than all of their predecessors. But recent research shows that previous infection ...