US leader urges Americans to prepare for major virus wave: 'The only real protection is to get your shot'

Serious cases remain well below 100 as largest number of people receive first and third shots in over a month; more than 1,000 people test positive for fifth day in a row

Helsinki Committee authorizing clinical trials yet to sign off on test-run of extra booster for 100 volunteers for unknown reason, even as Health Ministry okays shot for elderly

Giving 3rd vaccine doses diverts supplies away from unprotected countries, official says; Xi'an metropolis shut down over 52 cases; UK and France go forward with vaccinating kids

A third shot of its vaccine 'neutralized the Omicron variant' to levels seen following the second dose, says the pharmaceutical giant in new research

Education minister issues condemnation after parent shouts 'murderers' at Health Ministry employee and threatens to dox her

Officials looking to fix rules amid fears hundreds of thousands will be sent to quarantine; Liberman: Hysteria worse than virus

Patients at risk and medical workers also eligible as Israel becomes first country in world to offer fourth shot to combat Omicron variant

Hailing recommendation by panel of health experts, Bennett orders swift roll-out of extra vaccine booster for people over 60, immunocompromised and health care workers

Prime minister warns Omicron may be twice as contagious as Delta variant, hints that he could pursue more restrictions to flatten curve once wave hits