Israel embarks on fourth Covid vaccination campaign

Israel has become the first country in the world to embark on a fourth Covid-19 vaccination campaign as part of efforts to stem rapidly rising infection rates caused by the Omicron variant. People over the age of 60 and healthcare workers who received their third shot more than four months ago became eligible for a second booster of Pfizer-BioNTech on Monday, after a limited rollout began last week for elderly people and those with compromised immune systems. Officials had previously said they would wait for more data on the efficacy of a fourth shot before making it more widely available. The Israeli health ministry said on Tuesday, however, that even though it believes the threat posed by Omicron is minimal, it had been forced to act more quickly in the face of skyrocketing infection rates.