According to a spokesman of China National Medicines Corp., comprehensive crossover study with China’s vaccines based on inactivated Corona virus were conducted with over 10 virus strains which had evolved around the world. The neutralizing antibodies produced by the vaccines were found to have a high neutralizing effect on the virus strains found in South Africa and the United Kingdom, and their effect on the Corona mutants evolved in Brazil and Zimbabwe are currently being tested. Also vaccine development on mutant strains was started.
Japan JST China news, March 29, 2021
29-3 Chinese vaccine manufacturers start developing vaccines for Corona mutant strains