Since the COVID-19 pandemic began, health officials have warned that the biggest barrier to controlling the virus would be its ability to mutate into ever more infectious and dangerous forms. The ...
It only took about a month for BA.2.12.1, an Omicron subvariant, to cause most of the new COVID-19 cases in the U.S. since scientists first spotted it in the country. But even newer iterations of the ...
Two new omicron subvariants known as BA.4 and BA.5 are gaining traction in the U.S., but how transmissible are they and what do we know about them? Here's a breakdown of the newest mutations and what ...
(NEXSTAR) – On Tuesday, the Centers for Disease Control and Prevention added two new subvariants to its online tracker: BA.4 and BA.5. Both are subvariants of the omicron variant of COVID-19, which ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback