Israel has begun offering a COVID-19 booster to children as young as 12, and its prime minister says a campaign that began a month ago among seniors has slowed a rise in severe illness caused by the Delta variant.
Announcing the decision on Sunday, top Israeli health officials said the effectiveness of the second dose of the Pfizer-BioNTech vaccine waned six months after administration, making a booster necessary.
“The third dose brings us to the level of protection achieved by the second dose, when it was fresh,” said Sharon Alroy-Preis, head of public health at Israel’s Health Ministry.
“That means, people are 10 times more protected after the third vaccine dose,” she told a news conference, where the expanded booster drive was announced.
Those eligible for the third shot can receive it provided at least five months have passed since their second jab – a timeframe shorter than an eight-month interval in effect in the United States, which is considering cutting the waiting time.