Why is the epidemic in Hohhot so serious?

The Hohhot epidemic has summarized several reasons: First: the cause of the virus itself. The virus sequencing of this round of epidemic is the BF.7 evolutionary branch of the Omicron variant, which is the Omicron BA.5 variant. The derived third-generation subtype is highly virulent, spreads very quickly, and is extremely easy to cross-infection. Second: Hohhot is the provincial capital of the Inner Mongolia Autonomous Region, with a dense population, high mobility of people, and frequent transportation. Third: The weather is getting colder. Such a climate can easily cause the spread of the epidemic. Fourth: There were very few epidemics in Hohhot before, so people’s awareness of epidemic prevention would be weak, which could easily lead to the occurrence of epidemics.