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Berlin A Covid-19 booster vaccination with Pfizer/BioNTech for people over 60 years old considerably increases the protective effect, according to a study. There were more than 10 times as many proven infections and almost 20 times as many severe illnesses among people with two jabs than among people who had received a third shot in Israel, Israeli researchers wrote in the New England Journal of Medicine.
In Israel, all vaccinated people now have the option to receive a booster shot no earlier than five months after the second dose.
The country is currently fighting a third coronavirus wave despite very high vaccination rates.
The Israeli researchers assume that the more contagious Delta variant and declining protection six months after the second vaccine dose cause the protection rate against an infection to drop to 50 per cent. (dpa)
In Israel, all vaccinated people now have the option to receive a booster shot no earlier than five months after the second dose.
The country is currently fighting a third coronavirus wave despite very high vaccination rates.
The Israeli researchers assume that the more contagious Delta variant and declining protection six months after the second vaccine dose cause the protection rate against an infection to drop to 50 per cent. (dpa)
