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child are no less likely than adults to become infect with the newcoronavirus , but they are less likely to get seriously sick from it .
Those are the results of a new study fromChina ’s Shenzhen responsibility upload on thepreprint site MedRxivon March 4 . The research squad , led by scientist from the Johns Hopkins Bloomberg School of Public Health and the Shenzhen Center for Disease Control and Prevention , follow 391 people who contracted the Modern coronavirus , SARS - CoV-2 , between Jan. 12 and Feb. 14 , as well as 1,286 of their close middleman . This surveillance of close-fitting impinging admit the investigator to understand how the disease broadcast through friend , fellow worker and family members .
The bailiwick is not yet peer - reviewed , but it did reproduce a practice that researchers have been take note since early in the outbreak : child do n’t seem to get pallid with COVID-19 , the disease triggered by thevirus , at the same charge per unit grownup do . This is likely because children have intelligent lung than adult do ( they do n’t smoke and have fewer years of exposure to befoulment ) and because adults are more potential to have grave resistant response to respiratory diseases , expert told Live Science last month .
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However , the new research shows that tike do , in fact , trance the coronavirus at about the same rate as adults . According to the findings , 7.4 % of children exposed to one of the known flattop of the disease in the study later tested positively charged for the disease , alike to the population norm of 7.9 % .
Within households , the disease spread most promptly , with 15 % of the great unwashed living with an infected individual later coming down with the virus .
What stay indecipherable is how readily youngster , with their relatively soft symptom , spread the disease to other multitude — especially to vulnerable older person .
" That ’s one of the current critical continue questions , and we ’re trying to cipher out how to answer " it , study carbon monoxide - author Justin Lessler , an infective - disease epidemiologist at the Johns Hopkins Bloomberg School of Public Health , tell apart Nature News . " I have a 7 - calendar month - old and a 6 - yr - old , and I ca n’t imagine that , if they have any virus at all , they ’re not getting it on somebody . "
If children are good at transmitting the virus , it would bolster up the causa for school day closures aimed at reducing the scope of the outbreak . school day closure is a difficult decisiveness , epidemiologist previously secern Live Science , because it is a highly disruptive footfall . And we do n’t cognise the best clock time to close down schooling or how long they need to detain shut to reduce the spread of the disease .
A second lesson described in the new research is that close surveillance can help to halt the new coronavirus from open . citizenry who were test proactively because of their contact with an infected soul were set apart 2.7 days after produce symptoms , the researchers found . In equivalence , people who were screen only after developing symptoms were set apart 4.6 days after the symptoms emerge , an additional 1.9 mean solar day of potentially transmit the computer virus .
in the beginning published onLive Science .
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