Research, which hasn't yet been peer-reviewed, indicates vaccine could also work against South African strain, but more testing needed; Israeli health official welcomes news

Sharon Alroy-Preis says unclear what impact vaccination has on COVID variant, but says it may offer less protection against mutation

Top immunologists on how the mass inoculation drive has taken on fresh urgency as new strains spread globally

British health minister sounds alarm over virus mutation found in South Africa, says 'it's even more of a problem' than the UK variant

Cheap, easier to store shot boosts virus-fighting arsenal; Britain records 54,990 daily COVID-19 cases and 454 virus-related deaths on Sunday

As global vaccination efforts ramp up, pandemic hits new peaks, with over 1.8 million people dead and nearly 84 million cases reported

Health officials say man in his 20s with no travel history has been infected with mutated strain that originated in UK

Requirement for travelers to spend 2 weeks in state facilities had faced public criticism, was selectively enforced, and prompted clashes at isolation centers

Israelis who had returned from abroad clash with guards at Jerusalem IDF-run facility; Gantz, deputy health minister say policy should be rethought

Chezy Levy says hundreds of test samples undergoing genetic mapping, additional confirmed cases likely