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A top official with the World Health Organization has walked back statements that the spread of COVID-19 from people who do not show symptoms is "very rare," amid backlash from experts who have questioned the claim due to a lack of data.
Maria van Kerkhove, an infectious disease epidemiologist and the COVID-19 technical lead for the WHO, said June 8 that the available data from published research and member countries had shown asymptomatic cases were not a significant driver for the spread of the virus.
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