Covid-19 is becoming a seasonal virus in Thailand, primarily active during two periods of the year, said Yong Poovorawan, director of the Center of Excellence in Clinical Virology at the Faculty of Medicine, Chulalongkorn University.
Dr Yong said on his Facebook page that infections are expected to peak between June and September and November and February. He said the virus can re-infect a person, similar to the Respiratory Syncytial Virus (RSV), but unlike diseases such as measles which, once infected or vaccinated, can build immunity that lasts for life.
