Israel began offering a fourth dose of the Pfizer/BioNtech vaccine to people over 60 earlier this month as Omicron swept the country.
4th COVID shot made people over 60 twice as resistant to infection: Israel
© The Crystal Eyes
Israel began offering a fourth dose of the Pfizer/BioNtech vaccine to people over 60 earlier this month as Omicron swept the country.
© The Crystal Eyes