Where is the source of Lanzhou epidemic?

In some areas, it is really necessary to find out where the source of infection is as soon as possible, because once the source of infection is known, the epidemic can be quickly controlled. However, where is the source of the epidemic in Lanzhou, Gansu? Let's take a look at the latest news.

According to the news, from July 16 to July 17, 2022, there were 54 locally confirmed cases in Lanzhou City, Gansu Province. As of July, 2022 17 10, the cumulative number of confirmed cases 164 cases were reported in Lanzhou.

It is worth mentioning that most of the nucleic acid positive people in Chengguan District are concentrated in Kyushu, and the characteristics of the cluster epidemic are obvious, but the source is still unclear, and the potential spread risk of the epidemic is still great. In other words, the end time is unknown because there are still locally confirmed cases.