An international fight broke out last week when Brazilian regulators vetoed the import of the Russian COVID-19 vaccine, Sputnik V, alleging its second dose contains adenoviruses capable of replication—a potential danger to vaccine recipients. The vaccine's maker soon announced on Twitter that it would sue in Brazil for defamation. In response, officials of the Brazilian Health Regulatory Agency held a press conference displaying documentation that they said supported their claim of vaccine contamination. The furor comes as Brazil, which has one of the highest burdens of COVID-19 globally, has vaccinated only about 15% of its people and state governors there want to import 30 million Sputnik V doses.

上周爆发了一场国际斗争，巴西监管机构否决了俄罗斯 COVID-19 疫苗 Sputnik V 的进口，声称其第二剂含有能够复制的腺病毒——这对疫苗接种者来说是一种潜在的危险。该疫苗的制造商很快在推特上宣布将在巴西提起诽谤诉讼。作为回应，巴西卫生监管局的官员举行了一次新闻发布会，展示了他们所说的支持他们声称的疫苗污染的文件。愤怒之际，巴西是全球 COVID-19 负担最重的国家之一，该国仅接种了约 15% 的人口，那里的州长希望进口 3000 万剂人造卫星 V 疫苗。