Virologist advocates 4th vaccine dose for Covid high-risk group - Nation Thailand

It is advisable for people considered in the Covid-19 high risk group to take a fourth vaccine dose, a leading virologist said on Tuesday.

He said the first two doses of vaccines are fundamental vaccines while the third dose is the booster dose. In his opinion, all people must receive two doses of fundamental vaccines and a booster dos… [+309 chars]

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