'Confounding': Covid may have already peaked in many African countries
by Karen McVeigh from Science | The Guardian on (#586C0)
One explanation for virus not behaving as expected could be previous exposure to other infections, experts tell MPs
The coronavirus pandemic has peaked earlier than expected in many African countries, confounding early predictions, experts have told MPs.
Scientists do not yet know why, but one hypothesis is the possibility of people having pre-existing immunity to Covid-19, caused by exposure to other infections.
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