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Will “asymptomatic positive” infect others? Experts remind: stay vigilant in daily life details

In popular terms, asymptomatic positive is asymptomatic infection.” Chen Dechang said that, like many other diseases, there have also been a certain number of asymptomatic people carrying the new crown virus since the outbreak. “Generally speaking, this group of people has a strong immune function, and even if the body carries the virus, it will not cause large numbers of reproduction and cause tissue and organ disease.” Asymptomatic people have the ability to transmit the virus. When the virus load in the body reaches a higher abundance, it will have a stronger virus transmission capacity, but if the virus load abundance in the asymptomatic infection body is lower, the ability to transmit the virus will also be relatively weak.

In addition, different virus subtypes have significant differences in their ability to spread. Chen Dechang introduced that the National Science Review, sponsored by the Chinese Academy of Sciences, recently published a paper jointly completed by researchers at the Bioinformatics Center of the Peking University School of Life Sciences and Shanghai Pasteur Institute of the Chinese Academy of Sciences. Recently, 149 mutation points were generated, and two subtypes have evolved, namely, the L subtype and the S subtype, which show great differences.

“The S subtype is a relatively older version, which is more similar to the bat-derived coronavirus in the phylogenetic tree, and is not as strong in transmission; the L subtype is more invasive and more contagious. Large-scale transmission is more closely related to it. “He introduced that after studying 149 mutation points, scholars found that the L subtype is more common, accounting for 70%; the S subtype accounts for 30%. . But whether asymptomatic infections are mostly S subtypes requires further understanding.

http://www.shanghai.gov.cn/nw2/nw2314/nw32419/nw48516/nw48536/u21aw1432104.html

INDIA

Three-year-old from Kerala becomes India’s 40th coronavirus case
Five other cases from the Pathanamthitta district of Kerala were reported on Sunday. Kerala state Health Minister K.K. Shailaja said, the family acted irresponsibly by not reporting to the authorities after arriving from Italy.