科兴生物:修订间差异

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2021年1月7日,巴西[[布坦坦研究所]]宣布13000名志愿者的三期临床试验结果显示科兴新冠疫苗对预防需要医疗救助的病例有效性为78%。<ref name="JornaldaUSP">{{Cite news |last=Mariz |first=Fabiana |last2=Caires |first2=Luiza |date=7 January 2021 |title=Eficaz em prevenir doença grave e morte por covid, Coronavac deve ter impacto em frear pandemia |language=pt |work=Jornal da USP |url=https://jornal.usp.br/ciencias/eficaz-em-prevenir-doenca-grave-e-morte-por-covid-coronavac-deve-ter-impacto-em-frear-pandemia/ |access-date=7 January 2021}}</ref>其后,面对来自科学家的压力,并且在有人指责临床试验组织者误导公众后,布坦坦研究所于1月12日表示,78%的数字只包括患有轻度到严重病例的志愿者。在纳入无症状和不需要医疗救助的病例后,科兴疫苗在巴西的总体有效率降为50.38%。<ref name="wsj._Chin">{{Cite web |last=Pearson |first=Samantha |last2=Magalhaes |first2=Luciana |date=12 January 2021 |title=Chinese Covid-19 Vaccine Is Far Less Effective Than Initially Touted in Brazil |url=https://www.wsj.com/articles/chinas-sinovac-covid-19-vaccine-is-50-4-in-late-stage-brazil-trials-11610470581 |access-date=12 January 2021 |newspaper=[[The Wall Street Journal]]}}</ref><ref name="FolhaGielow">{{Cite news |last=Gielow |first=Igor |last2=Lopes Batista |first2=Everton |last3=Bottallo |first3=Ana |date=12 January 2021 |title=Coronavac tem eficácia geral de 50,38% no estudo feito pelo Butantan |language=pt |work=Folha de S. Paulo |url=https://www1.folha.uol.com.br/equilibrioesaude/2021/01/coronavac-tem-eficacia-geral-de-504-no-estudo-feito-pelo-butantan.shtml |access-date=12 January 2021}}</ref>
 
2021年2月20日,香港联合科学委员会指出,科兴疫苗整体有效率是50.66%,远远低于辉瑞疫苗95%的有效率, {{font color|grey|但科兴疫苗的副作用却是三种本地获批疫苗中最高的}}(另外两款为[[復必泰]]和[[牛津-阿斯利康]])。<ref>{{Cite web|title=香港科委指中國科興疫苗效果有限 副作用最高|url=https://www.rfa.org/mandarin/Xinwen/8-02212021161739.html|accessdate=2021-02-22|work=Radio Free Asia|language=en|archive-date=2021-02-22|archive-url=https://web.archive.org/web/20210222023858/https://www.rfa.org/mandarin/Xinwen/8-02212021161739.html|dead-url=no}}</ref> <ref>[https://www.fhb.gov.hk/download/our_work/health/201200/e_evaluation_report_CoronaVac.pdf 新型冠状病毒灭活疫苗(Vero 细胞)说明书] 香港食物及卫生局,PDF 页19</ref>但是政府專家顧問、港大醫學院院長梁卓偉表示,科興和復必泰疫苗的安全度,每100萬人接種,出現嚴重極端反應情況的比率,分別是一宗和4.7宗;復必泰數字較高。<ref>[https://news.rthk.hk/rthk/ch/component/k2/1576658-20210221.htm 梁卓偉稱科興復必泰十分安全 但建議部分人稍後再決定] RTHK,2021-02-21</ref>
2021年2月22日,菲律宾食品与药物管理局局长多明戈,称不建议经常暴露在疫情风险中的医护人员接种中国科兴生物疫苗,原因是它对抗冠病的效能仅为50.4%,但科兴疫苗有效。<ref>{{Cite web|title=菲给予科兴疫苗使用授权 但不建议医护人员使用|url=https://www.zaobao.com.sg/realtime/world/story20210222-1125960|accessdate=2021-02-24|date=2021-02-22|last=陈慧璋|first=文 /|work=早报|language=zh-Hans|archive-date=2021-02-22|archive-url=https://web.archive.org/web/20210222101415/https://www.zaobao.com.sg/realtime/world/story20210222-1125960|dead-url=no}}</ref>