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For months, people wondered howasymptomatic cases Coronavirus are. Understanding the perventability of people with CIVID-19 that do not have symptoms are essential to mitigating spread because they are the most likely to unconsciously infect others. The disease control and prevention centers (CDC) warnedasymptomatic extent Even before having a strong understanding of the amount of a problem. But now, the CDC says thatNearly half of people infected with coronavirus are asymptomatic (40%, be accurate).

In May, the CDC created five "Covid-19" pandemic planning scenarios using data to estimate a range of possible trajectories for the coronavirus at the US at this point, the "Best Estimate" of the CDC was that35% of cases were asymptomatic. Now they have updated their predictions using new data until June 29th. The current "Best estimate" of CDC is it about40% of people infected with coronaviruses do not have any symptoms of the disease, a notable increase of 5%.

And that's not where the bad news ends. In May, the CDC predicted that 40% of all coronavirus transmissions came from people without symptoms, they now say 50% of all cases come from those who show no sign of viruses, no longer because they are asymptomatic. or pre-symptomatic (which means they finally develop symptoms but do not have them at the time of transmission).

The question of asymptomatic propagation has been a regularly burning subject, from an organization of the World Health Organization (WHO), said in June that it seems to berare that an asymptomatic person actually transmits on a secondary person. "However, who followed later this comment later." Whatever the proportion of the diseaseTransmission of asymptomatic individuals ... is unknown, "said another official the next day. But, he added, "It happens. I am absolutely convinced that this happens. "

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There is also a brilliant spot in the updated evaluations of the CDC. The best current estimate of the Agency for the infectious asymptomatic individuals - compared to symptomatic individuals - is now 75%, 100% in May.

Although the CDC uses data to estimate these numbers, they emphasize that the actual number of asymptomatic cases remains uncertain. "Asymptomatic cases are difficult to identify because individuals do not know they are infected unless they are tested, which is generally only systematically as part of a scientific study," said the CDC. And for more information on the propagation of coronavirus, checkIt is who transmitting more than 50% of COVID cases..