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Browsing Tag

Covid19

¿Las vacunas contra la COVID-19 van a necesitar refuerzos?

The protection of less effective vaccines against COVID-19 can wear off faster. The Sinopharm vaccine may already show signs of this decline. Clinical studies show it is 78 percent effective, but the United Arab Emirates and Bahrain are…

Covid-19 Vaccines: Novavax Experiences Extra Delays

Novavax, one of the earliest players in the world's vaccination race against Covid, delivered disheartening news Monday, saying its highly protective vaccine would not be approved in the US or UK until July and would not reach peak…