The P.1 Covid-19 variant that originated in Brazil and has spread to more than 25 countries is around twice as transmissible as some other strains and is more likely to evade the natural immunity people usually develop from prior infection, according to a new international study.
根据一项新的国际研究，源自巴西、已传播至逾25个国家的P.1新型冠状病毒变种的传染性是其他一些毒株的约两倍，而且更有可能逃避人们通常因先前感染而产生的自然免疫力。
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