US scientist plays down coronavirus vaccine hopes

A top US scientist says governments should not count on a successful vaccine against Covid-19 being developed anytime soon.

William Haseltine, a groundbreaking researcher of cancer and HIV, says it may only be possible to manage outbreaks in the future.

Even without an effective treatment or vaccine, he says the virus can be controlled by identifying infections, finding people who have been exposed and isolating them.
 

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