The second round time after COVID-19's liberalization is June 5438+February 2022.

65438+ 10 month in 2023. After it was released in June 5438+February 2022, the second round of COVID-19 appeared in novel coronavirus in June 5438 +2023 10. It is a coronavirus belonging to β genus, also known as 20 19 novel coronavirus (20 19-nCoV), which can cause novel coronavirus after infection.