How was the Lianyungang epidemic caused?

It is caused by the evolutionary branch of Omicron mutant. According to the COVID-19 gene sequencing analysis of Lianyungang cases by provincial CDC, COVID-19 in this epidemic is an evolutionary branch of Omicron mutant, so it is caused by an evolutionary branch of Omicron mutant. Lianyungang is a prefecture-level city in Jiangsu Province. In ancient times, it was called Iraq, Donghai, Haizhou, Yuzhou and Haining, also known as the port city. Lianyungang is named because it faces the island, is backed by Yuntai Mountain and is a seaport.