Does Lingao-Haikou high-speed railway need nucleic acid?

According to relevant data, it is necessary to do nucleic acid testing from Lingao to Haikou. Today is 165438+20221October 4th. Lingao County on the west coast of Hainan Province has been a risk-free area for nearly two days, with no new cases. On that day, there were no new cases in Haikou City, Hainan Province, but on June 3rd of the previous day, there were two confirmed cases in 165438+ COVID-19. According to the epidemic prevention and control policy, people who have returned to Haikou City, Hainan Province and have no residence history in high-risk areas can enter within 48 hours after checking their body temperature, identity certificate, health code, travel code and 1 nucleic acid negative certificate. So it is necessary to do nucleic acid testing from Lingao to Haikou.