JERUSALEM—Israel began offering a COVID-19 booster to children as young as 12 on Aug. 29, and its prime minister said a campaign that began a month ago among seniors has slowed a rise in severe illness caused by the Delta variant.
Announcing the decision, 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,” Sharon Alroy-Preis, head of public health for the Israel Ministry of Health, said during a news conference announcing the expanded booster drive. “That means, people are 10 times more protected after the third vaccine dose.”
Those eligible for the third shot can receive it, provided at least five months have passed since their second dose—a timeframe shorter than the eight-month interval in effect in the United States, which is considering cutting the waiting time.
Hoping to curb the spread of the Delta variant, Israel began administering the booster shot to its older population a month ago and has been gradually lowering the age of eligibility. It stood at 30 before the Aug. 29 announcement.
Thus far, 2 million Israelis have received three doses. Israel has a population of 9.3 million people.
“There are already results: The increase in severe morbidity has begun to slow,” Prime Minister Naftali Bennett said in a statement. “But we have to complete third doses for all of our citizens. I call on those aged 12 and up to go out and immediately take the third shot.”
Israel and other countries have pressed ahead with booster plans, despite opposition from the World Health Organization, which said more of the world should be vaccinated with a first dose before people receive a third.
The United States has said it will offer booster doses to all Americans, citing data showing diminishing protection. Canada, France, and Germany have also planned booster campaigns.
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