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the National Bureau of Disease Control and Prevention ,只有再无德卢斯 the proportion of EG.5 mutant strains in the global epidemic strains has increased rapidly, showing a stronger transmission advantage. Studies at home and abroad have shown that the prevalence advantage of EG.5 mutant strains is mainly due to its enhanced immune escape ability, and the neutralizing ability of neutralizing antibodies produced by previous infections against EG.5 mutant strains has decreased.