Children bear the brunt!New study finds that Omicron variant BA.5 may attack the brain

against coronavirusOmicronSubvariantBA.5New research from the University of California suggests the strain may be changing the way it attacks the body-From infecting the respiratory system to being brain-basedaims.

The pathogenicity of the virus did not decrease but increased

 

Researchers from Australia and France found thatBA.5(one of the most prevalent strains of the new coronavirus in the world) caused more severe damage to the brains of mice, leading to brain inflammation, weight loss and even death. In addition, the strain also had a destructive effect on human brain tissue grown in the laboratory .

(Source: Kateryna Kon/Shutterstock)

"This finding showsOmicron virusLineages do not evolve toward decreasing pathogenicity."Queensland, Australia leading the projectQIMR Berghofervirologist andreas of the institute of medicine·Surbier (Andreas Suhrbier)Say.

Questioning voice

however,Other experts have raised doubts, pointing out that a major limitation of the study is that it was conducted on mice, which may not necessarily apply to humans.

(Source: Shutterstock)

"In their experiments, all mice died fromBA.5Brain infection.This is obviously very different from human infection as we know it,"Jin Dongyan, a virologist at the University of Hong Kong, said.

In a paper published last month in the journal Nature, a team of Japanese and American scientists reported that,BA.5seems to have inheritedOmicronSubvariants are characterized by low pathogenicity.but,BA.5than otherOmicronThe subvariant is more transmissible and can successfully break through immune barriers that people build up through vaccination or infection with the virus.The strain has been found in more than 100 countries and is the dominant strain in countries such as the US and UK.

The two main strains prevalent in China areBA.5.2BF.7, both areBA.5derived variants.Together they account for the country'sCovid-19total number of infections80%that's all.

There are precedents in Hong Kong and Taiwan

Surbier and his team write that there is ample evidence thatCovid-19Brain abnormalities and symptoms of infection are present in patients.

(Source: Heho)

There have been cases of children with encephalitis caused by the new coronavirus in Taiwan. Since last year12month to year9In March, Taiwan's children with severe illness had a total of206For example, severe encephalitis has31For example, the proportion of 15%.

In the wave of the epidemic in Hong Kong earlier this year, there were also cases of the virus attacking the brains of children. A study by the University of Hong Kong showed thatOmicronThe impact on the brain and upper respiratory tract of children is significantly higher than that of other viruses, and it seems to be more neuropathic.

Symptom ratio map of children's new crown cases in Hong Kong in February 2022 (Source: Skypost)

Fearing new mutation, US takes action against travelers from China

According to Bloomberg,U.S. health officials say the high number of people infected in a short period of time raises the possibility of new variants emerging.New mutations can make the virus more transmissible or more deadly.

(Source: AFP/Getty Images)

With this concern and in order to protect the health of the American public, from1Month5Starting today, the United States will require travelers from China to submit a negative report for the new crown test.

Officials said that from1Month5Beginning at midnight on Sunday, travelers two years and older flying to the U.S. from mainland China, Hong Kong and Macau will be required to take a COVID-XNUMX test within two days of departure.Passengers are required to present a negative nucleic acid or rapid antigen test report provided by a medical institution, officials said.Travelers transiting the U.S. from China will also be required to present a negative test report prior to arrival, officials said.

参考资料

https://www.bloomberg.com/news/articles/2022-12-28/us-to-require-negative-covid-tests-for-travelers-from-china?srnd=premium-asia

https://www.scmp.com/news/china/science/article/3204807/coronavirus-omicron-ba5-subvariant-may-cause-more-damage-not-less-study?module=lead_hero_story&pgtype=homepage

https://skypost.ulifestyle.com.hk/article/3283693/%E6%96%B0%E5%86%A0%E8%82%BA%E7%82%8E%EF%BD%9COmicron%20BA.2%E7%B5%95%E4%B8%8D%E6%BA%AB%E5%92%8C%E3%80%80%E6%B8%AF%E7%A0%94%E7%A9%B6%EF%B8%B0%E5%B0%8D%E5%85%92%E7%AB%A5%E8%85%A6%E9%83%A8%E4%B8%8A%E5%91%BC%E5%90%B8%E9%81%93%E5%A8%81%E8%84%85%E5%A4%A7

https://heho.com.tw/archives/240431

 

* This article is an original article about food products, and only represents the author ’s position.
Does not involve any commercial interests and is only for transmission and reference purposes.
Does not constitute a recommendation for any behavior.


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