Experts say coronavirus is likely to keep spreading for up to two more years and will infect up to 70 percent of the world's population
Experts say coronavirus is likely to keep spreading for up to two more years and will infect up to 70 percent of the world's population
3 May 2020
Three-point-four million people around the globe have now caught Covid-19 and nearly a quarter of a million have died from it.
Massachusetts General Hospital infectious diseases chief, Dr Rochelle Walensky, says nearly 70 percent of people would have to catch the virus to enable herd immunity.
She's says that means 230-million Americans would have to catch it to achieve herd immunity, if there's no vaccine.
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