Why are so many vaccinated people getting COVID-19 lately?

People might mistakenly think the COVID-19 vaccines will completely block infection, but the shots are mainly designed to prevent severe illness, says Louis Mansky, a virus researcher at the University of Minnesota.

Israel to offer 4th vaccine dose to most vulnerable

Israel has approved a fourth vaccine dose for people most vulnerable to COVID-19, becoming the first country to do so as it braces for a wave of infections fueled by the omicron variant.

Fauci: US should consider vaccine mandate for US air travel

Dr. Anthony Fauci, the top U.S. infectious disease expert, said the U.S. should consider a vaccination mandate for domestic air travel, signaling a potential embrace of an idea the Biden administration has previously eschewed, as COVID-19 cases spike.