Where is the source of Xi 'an epidemic? What is the virus of Xi 'an epidemic in 2022?

Recently, the epidemic situation in Xi has attracted much attention. According to experts, the Xi epidemic is the most serious after Wuhan. Many people don't know where the source of Xi 'an epidemic comes from and what kind of virus caused it. The following small series will answer for everyone.

Where is the source of Xi 'an epidemic? Xi's current epidemic comes from Delta strain imported from Pakistan flight on February 4th, 65438. On the afternoon of October 7th, 65438/KLOC-0, a press conference on epidemic prevention and control was held in Xi 'an, Shaanxi. According to the results of virus sequencing and laboratory testing, it was found that the CT value of Delta strain which caused the epidemic in Xi 'an was very low. The lower the CT value, the higher the viral load of this patient, and the greater the risk of transmission. This phenomenon is different from other local epidemics in Xi.

According to the gene sequencing results of some confirmed cases found in Xi 'an, it shows that it is a source of infection, but due to the hidden transmission characteristics of this virus strain, no clear evidence of transmission has been found in some infection routes.

What virus is Xi 'an epidemic? It is understood that the current epidemic situation in Xi 'an is caused by Delta mutant virus, not Omicron. However, many people blame Omicron for the local epidemic in Xi 'an, because it not only spreads quickly, but also carries more viruses, which is even more terrible than the epidemic in Bedeta. However, according to the press conference held in An on February 22, 65438, the local epidemic situation in Xi 'an was caused by Delta mutant by gene sequencing, all of which were highly homologous to the imported cases found in passengers of Pakistan inbound flight PK54 on February 4, 65438.

Why did the Xi epidemic cause so many people to be diagnosed? Because this round of epidemic in Xi 'an has three transmission chains, the first one is that no positive cases have been found in the isolation hotel recently. Second, close contacts of clinical cases of Bozi have not found positive cases at present. The third is that the case transmission chain of Chang 'an University is still extending. Because of many transmission chains, the virus soon began to spread in the local area, and many patients may have no reaction at all, thinking that it was a cold that didn't cost 100 million yuan, which led to the rapid expansion of the epidemic.