"On August 24, a 33-year-old man in Hong Kong was reported to have coronavirus for the second time. But this is not the final result of science related to immunity," Chairman of the German-Azerbaijani Radiological and Neuroradiological Society, Doctor of Medical Sciences of the University of Cologne Nuran Abdullayev told Report.
"After returning from a trip to Spain in August, he was re-diagnosed with COVID-19. However, unlike the initial infection, the patient had no symptoms this time. Only a blood test showed signs of the virus. Simultaneously, the type of virus that the person was infected in March was different from that. He underwent a serological test, and no antibodies were found in his blood. It may be since the disease was already mild. There is not yet scientific proof," she noted.
The Azerbaijani scientist reminded that in some cases, people who have recovered from COVID-19 are more likely to be reinfected:
"But even if it happens, it is not as severe as the first disease. However, this does not evidence that all people will be reinfected. Therefore, I think there is a need for extensive scientific research worldwide."
The doctor of medical sciences also commented on the need for vaccination if reinfection with coronavirus is proven:
"Everyone should know that the vaccine is not yet 100 percent guaranteed to protect a person from the virus. But if it secures from the severe clinical course of the virus after vaccination, it will be enough for the health system and will be a great help."