Coronavirus live news: WHO warns no herd immunity in 2021; Moderna says vaccine immunity lasts a year

A member of the New York Police Department receives a dose of the Moderna coronavirus vaccine at Queens Police Academy in the Queens borough of New York, US, 11 January 2021. Photograph: Reuters

source https://www.theguardian.com/world/live/2021/jan/12/coronavirus-live-news-who-warns-no-herd-immunity-in-2021-moderna-says-vaccine-immunity-lasts-a-year