This week, the FDA and CDC authorized Pfizer and Moderna to start administering vaccine boosters that have been reengineered to specifically target the Omicron BA.4 and BA.5 variants that caused this ...
The Ba.4 and Ba.5 subvariants of omicron are now estimated to make up more than half of all COVID-19 cases in the United States. Here’s what to know. Less than six months after the omicron wave hit ...
Pfizer announced Saturday that tweaking its COVID-19 vaccine to better target the omicron variant is safe and works — just days before regulators debate whether to offer Americans updated booster ...
The latest Covid-19 surge, caused by a shifting mix of quickly evolving omicron subvariants, appears to be waning, with cases and hospitalizations beginning to fall. Like past Covid waves, this one ...
When the omicron variant first emerged last November, many doctors, researchers and scientists hoped that the new strain — while more transmissible — would cause fewer deaths. Indeed, early research ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback