This article is 3 years old
South Korea to mix-and-match Covid-19 vaccine doses for 760,000 people
Some 760,000 South Koreans who have received a first dose of AstraZeneca Plc's Covid-19 vaccine will be offered Pfizer Inc's vaccine as a second shot due to shipment delays by global vaccine sharing scheme COVAX, the government said.
Several countries, including Canada and Spain, have already approved such dose-mixing mainly due to concerns about rare and potentially fatal blood clots linked to the AstraZeneca vaccine.
A Spanish study found that giving a dose of the Pfizer shot to people who already received the AstraZeneca vaccine is highly safe...
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