The World Health Organization said recently that despite the emergence of new mutated new coronaviruses in South Africa and the United States, the new crown vaccine has a significant effect in preventing severe illness and death, and the WHO still recommends that the public be vaccinated in a timely manner.

WHO Director-General Tedros Adhanom Ghebreyesus said at a press conference on the same day that the number of cases reported in the Americas and Africa was increasing due to the Omicron subtype strain. South Africa has now reported two Omicron subtype strains, BA.4 and BA.5, following the report of the Omicron strain at the end of last year, which has contributed to the surge in cases in South Africa.

Tedros said it was too early to determine whether these new subtype strains caused more severe disease than other Omicron subtype strains. But early data suggest that vaccination is still protective against severe illness and death. “The best way to protect people remains vaccinations, along with proven public health and social measures.”

Van Kerckhofer, technical director of the WHO’s health emergency program, said on the same day that the Ormicron subtype strains BA.4 and BA.5 have been detected in many countries, and researchers have obtained hundreds of gene sequences. The two new subtype strains are being evaluated by WHO. She reiterated her call for countries to continue monitoring and testing for the new coronavirus so that WHO can conduct relevant research and make the best recommendations.

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