Health Times Chen Linhui
According to the Daily Mail, Australia, which is about to enter winter in the southern hemisphere, has recently entered the high epidemic season. At present, new variants BA.4, BA.5, BA.2.12.1 and BA.2 have been clustered in Australia.
On 4 May, Western Australia, the only state in Australia, reported 9,782 new confirmed cases of COVID-19 in a single day. According to the website of the Chinese Consulate General in Sydney on May 5, recently, the situation of the new crown pneumonia epidemic is still grim, the daily confirmed cases in Australia remain high, and there are still imported cases on flights to China.
People line up in Melbourne, Australia, for COVID-19 testing. Xinhua News Agency Photo by Ou Xin
According to the World Health Organization's weekly REPORT on covid-19 released on April 27, the Omilon strain is the mainstream variant of the global epidemic, with 99.7% of the more than 250,000 coronavirus sequences uploaded to the Global Influenza Shared Database (GISAID) in the past 30 days being Omilon.
On January 19, the United Kingdom for the first time found the combination of the Subtypes OF BA.1 and BA.2 of the Omikeron strain XE, and the World Health Organization pointed out in its weekly report that the initial estimate of the new strain of the new coronavirus XE is 10% more contagious than the Omiljungya variant BA.2, but it needs to be further confirmed.
On May 6, local time, an article in Nature quoted virologists as saying that important new variants of the new coronavirus seem to appear every six months, which may be the cyclical transmission pattern that will be fixed in the future new crown epidemic. Nearly six months after researchers in South Africa discovered the new coronavirus Olmi kerong variant, two offshoots of the Semikron strain once again led to a surge in COVID-19 cases in the country. Several studies published in the past week have shown that the new Omilon variants of BA.4 and BA.5 are more contagious than the earlier Omilon virus, able to escape the partial immune protection formed by early virus infection and vaccination in people.
Multiple subtypes of Omiljung are present in Australia, will there be new combinations?
Jin Dongyan, a professor at the School of Biomedical Sciences at the University of Hong Kong, told the Health Times reporter that different mutant strains need to be recombined after entering the host, and most of them may not be able to survive after recombination, so in fact, the possibility of a person being infected with multiple new Variants of Ami Kerong at the same time is extremely low, and there is no need to worry too much about the continuous mutation of the new Variants of TheMicoreon.
Why did the Omiljung strain evolve such a "variety of" subtype variants?
According to Xinhua Daily Email, WHO experts say the genetic diversity of Omilon indicates that the new crown virus continues to face pressure from natural selection in an attempt to adapt to its host and environment. Although the Aumechjong strain is less pathogenic than the Delta strain, its unique "advantage" makes it eventually "beat" Delta to become the global mainstream strain.
"In principle, there are countless new mutants around the world every day, and unless they are found to have a fairly wide spread or show new and noteworthy characteristics, they are all short-lived and do not need to worry too much." Jin Dongyan, a professor at the School of Biomedical Sciences at the University of Hong Kong, told the People's Daily Health Client reporter that since the outbreak of the epidemic more than two years ago, only 4 new mutants in the world have finally taken advantage in the spread, but during this period, there are thousands of other mutants that are only short-lived.
