LONDON - Scientists have said that AstraZeneca may offer longer-lasting immunity than other vaccines, prompting speculation that the jab has helped...
 
LONDON - A Covid-19 treatment derived from the immune cells of virus survivors gives better protection than vaccines after six months and could last...
 
GENEVA - The number of tobacco users continues to decrease globally, going from 1.32 billion in 2015 to 1.30 billion last year, the World Health...
 
LONDON - Wearing a face mask is the single most effective public health measure for avoiding Covid-19, reducing incidence by 53%, according to the...
 

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