Chinanews.com, December 12 The National Health Commission held a press conference on December 17 to introduce the prevention and treatment of respiratory diseases in winter. Chang Zhaorui, a researcher at the Infectious Disease Management Department of the Chinese Center for Disease Control and Prevention, said that so far, China's new coronavirus infection is at a low epidemic level, and no unknown new viruses and new bacteria have been found in China in the monitoring of respiratory disease pathogens.
Some reporters are concerned about the current spread of the new crown variant JN.1 in our country. Chang Zhaorui introduced that the new coronavirus variant JN.1 is a subclade of the Omicron variant BA.2.86. The results of global monitoring show that since November, BA.11.2, especially the subclade of JN.86, has increased significantly in the global proportion and has become one of the dominant circulating strains in some countries. On November 1, the World Health Organization (WHO) adjusted BA.11.21 from a variant requiring global surveillance to a variant of concern, with the risk of clinical severe infection as low and the overall public health risk as low.
Chang Zhaorui pointed out that the surveillance results of China's new coronavirus variant show that since the first imported case of BA.2023.8 variant was reported on August 31, 2, a total of 86 BA.2.86 and its subclade sequences have been reported across the country, of which 160 are imported cases and 148 are local cases, and no severe or severe cases have been found. At present, the BA.12.2 variant accounts for a very low proportion of the sequences reported in China, but the proportion of sequences in imported cases has increased rapidly since November, and its growth trend is gradually converging with that of the world. Experts believe that at present, the new coronavirus infection in China is at a low epidemic level, and BA.86.11 and its subclades account for a relatively low proportion, and the public health risk of this variant in China is low.
"To date, no unknown new viruses and new bacteria have been detected in our country in terms of pathogen surveillance of respiratory diseases." Chang Zhaorui said.