The World Health Organization on Monday announced that B.1.617, the coronavirus variant first identified in India, is of global concern.
Maria Van Kerkhove, technical lead of WHO's coronavirus response, said that there is "some available information to suggest some increased transmissibility of B.1.617," and more research is needed to determine whether COVID-19 vaccines are as effective against this variant. There are three other variants of global concern: the strains first detected in Britain, South Africa, and Brazil.
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