Two doses of the Johnson & Johnson Covid-19 vaccine cuts the risk of hospitalisation by up to 85 per cent, according to a South African study conducted when the Omicron coronavirus variant was dominant.
根据南非在新冠病毒Omicron变种成为主要感染源时的一项研究,两剂强生(J&J)新冠疫苗可将住院风险降低最多85%。
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