**: People's Health Client.
On December 15, the National Bureau of Disease Control and Prevention issued a report on the new coronavirusPopular science articles on 1 variants. The main circulating strain in China at this stage is still eg5 and its subclades. The native JN was first discovered in NovemberSince the 1 variant, as of December 10, a total of 7 cases of JN have been monitored in China's local cases1 variant. Although the current jnThe prevalence level of the 1 variant in China is extremely low, but it is affected by international epidemic strains and imported cases in the future, and JN is not excluded1. The possibility that the variant will become the dominant epidemic strain in China.
jn.1 is the new coronavirus Omicron BA2.The second-generation subclade of the 86 variant, also BA2.A subclade of the 86 variant with a strong transmissibility advantage. The variant was first detected in samples collected in Luxembourg on August 25 this year. Since November, due to jn1 The proportion of circulating strains in the world is growing rapidly, and the World Health Organization on November 21, the World Health Organization will ba2.The 86 variant was upgraded from a "variant requiring surveillance" (VUM) to a "variant of concern" (VOI).
Internationally jn1. What is the flow of variants?Since November of this year, jnThe share of the 1 variant in the global circulating strain has increased rapidly, from about 4% in early November to about 30% in early December. As of 10 December, JN has been detected in at least 40 countries and territories around the world1 variant. In terms of distribution, Europe accounts for the highest proportion, and the Americas and other continents have JNThe proportion of variants1 is also growing rapidly.
jn.1. Are variants spreading faster?Judging from the flow of various countries, the recent jnThe 1 variant is growing rapidly in several countries, but studies have shown that in terms of transmission1 There is no significant difference with the XBB variant. The World Health Organization reports that it contains XBB1.The 5-ingredient coronavirus vaccine is still against jn1 variant is effective. Therefore, on the premise that the population is broadly immune to the Omicron variant, including vaccination and natural infection, jn1 Variants may be relatively transmissible.
Infection JnWill the symptoms be more severe after the 1 variant?The World Health Organization evaluation includes jn1 including BA2.The risk of severe clinical infection of the 86 variant is low. U.S. monitoring data shows that jnThe 1 variant has recently increased the proportion of new coronavirus infections in the United States, and no cases have been found to cause infection1. When the severity of the disease increases after a variant. China's monitoring data shows that jn1. Variant infections are mild or asymptomatic. The symptoms caused by different variants are often similar, and the type and severity of symptoms often depend more on the individual's immunity. Based on the available evidence, JnThe public health risk of the 1 variant is low.
The National Bureau of Disease Control and Prevention reminds that as with the prevention of other Omicron variant infections, it is recommended that the public continue to maintain good personal hygiene Xi, wear masks scientifically, get vaccinated in time, adhere to regular work and rest, ensure a healthy diet, and improve immunity.
Editors: Hu Mengyao, Qiao Rui.