“Covid 19” is easy to mutate. Covid vaccine must be developed all the time.
M.Yong Prof. Dr. Yong Phuworawan, Head of the Center specializes in clinical virology. Faculty of Medicine Chulalongkorn University said that the virus “Covid 19” It is an RNA virus, so it is easier to mutate or change genetically than viruses in the DNA group. and when vaccines are used to naturally pressure the virus The … Read more