The researchers used data from 185 countries to estimate that vaccines prevented 4.2 million COVID-19 deaths in India, 1.9 million in the United States, 1 million in Brazil, 631,000 in France and 507,000 in the United Kingdom.
The Pfizer-BioNTech Covid-19 vaccine appears to be safe in people previously diagnosed with myocarditis, according to a small study presented Thursday at a European medical conference.
Nearly half of all European countries have recorded increases in new Covid-19 cases in the past week, according to an NBC News analysis of data from the Johns Hopkins Coronavirus Resource Center.
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