Pfizer has started with Covid-19 vaccine clinical trials in children between 6 months and 11 years old,

April 06, 2021.- The American pharmaceutical company Pfizer announced on Thursday, April 1st, that it has begun clinical trials of its coronavirus …, April 06, 2021.- The American pharmaceutical company Pfizer announced on Thursday, April 1st, that it has begun clinical trials of its coronavirus …, Read More

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