Asymptomatic COVID-19 Spread Deemed 'Rare,' WHO Says
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An official with the World Health Organization (WHO) has stated that it appears to be "rare" that an asymptomatic individual can pass SARS-CoV-2 to someone else.

• "From the data we have, it still seems to be rare that an asymptomatic person actually transmits onward to a second individual," Maria Van Kerkhove, Ph.D., WHO's COVID-19 technical lead and an infectious disease epidemiologist, said June 8 at a news briefing.

• She additionally tweeted: “Complete research on transmission from asymptomatic people is tough to conduct, however the accessible proof from contact tracing reported by the Member States means that asymptomatically-infected people are a lot much less prone to transmit the virus than those that develop signs.”

• This announcement came on the heels of the publication of analysis in the Annals of Internal Medicine, which suggested that as many as 40-45% of COVID-19 cases may be asymptomatic.

• The study analyzed data of asymptomatic individuals from 16 cohorts between April 19 and May 26, 2020. Each cohort had varying rates of asymptomatic or presymptomatic cases.

• When residents of Iceland had been examined, 43 of 100 people who examined optimism for SARS-CoV-2 didn’t present signs. In Vo’, Italy, 30 of 73 individuals (41.1%) with optimistic SARS-CoV-2 check outcomes didn’t have signs in a primary spherical of testing, and 13 of 29 (44.8%) had no signs in a second spherical of testing. Over half of residents of San Francisco’s Mission District who acquired testing (39 of 74; 52.7%) didn’t have signs, whereas barely lower than half of Indiana residents examined confirmed no signs (35 of 78; 44.8%).

• From the results, it is difficult to tell the difference between people who are presymptomatic and will later go on to develop symptoms of COVID-19 and those who will remain asymptomatic.

Source: https://www.medscape.com/viewarticle/931984
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