ISTANBUL -- A fourth jab of vaccine? Would-be travelers in Turkey began receiving just that on Monday to become eligible for the vaccine passports necessary for them to journey to the U.S. and Europe.
COVID vaccines
Turkey starts giving a fourth jab to travelers for vaccine passports
Many countries won't recognize Sinovac, which was widely administered by Ankara
A medic prepares a dose of the Pfizer vaccine in Diyarbakir, Turkey. © Reuters
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