Why is Wuhan so isolated from SF?

As of February 2, 2022, 65438+, Wuhan is a high-risk area.

According to the data of the national epidemic data website, the number of confirmed cases in Wuhan is 5063 1 case, and the highest risk location is Wuhan, with 142 cases, so the control of express delivery is stricter.

Pay attention to personal protection during the epidemic, carry out regular nucleic acid testing, inoculate COVID-19 vaccine to enhance resistance, pay attention to personal protection, wear a mask when going out at ordinary times, and don't go to crowded places.