Covid-19 vaccines using messenger ribonucleic acid (mRNA) technology, such as those made by Pfizer-BioNTech and Moderna, are the most effective against the coronavirus, including its variants, while …
( read original story …)
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The Singapore News
Covid-19 vaccines using messenger ribonucleic acid (mRNA) technology, such as those made by Pfizer-BioNTech and Moderna, are the most effective against the coronavirus, including its variants, while …
( read original story …)
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