Messenger RNA (mRNA) vaccines against Covid-19 infection increasingly appear as potentially the most effective way out of the worldwide crisis caused by the coronavirus. In Israel, the mRNA vaccines are demonstrating their efficacy, at least regarding the most severe forms of Covid-19; after a vast campaign of vaccinations of the elderly with the Pfizer-BioNTech mRNA vaccine, the numbers of their hospitalisations due to Covid-19 infection have fallen dramatically.
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