Professor David Heymann, who led the WHO's response to SARS, is providing a weekly #COVID19 briefing for Chatham House members, which is freely available to play back on our website.
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What do we know about immunity? 'In some coronaviruses, the antibodies decrease in effectiveness and permit another infection of the same organism.' 'We don’t know yet in the new coronavirus that causes COVID-19, whether or not that coronavirus causes long lasting immunity.'
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