A massive COVID-19 vaccination campaign is underway worldwide. Epidemiological data from studies indicate excellent efficacy and safety profile for COVID-19 vaccines. However, there are few data from studies on the effect of decreasing the probability of infection of vaccinated subjects compared to unvaccinated subjects. In this short communication, we describe some evidence on this important and current topic providing useful personal reflections.

中文翻译：

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COVID-19 疫苗和减少 SARS-CoV-2 的传播

全球正在进行大规模的 COVID-19 疫苗接种运动。研究的流行病学数据表明 COVID-19 疫苗具有出色的功效和安全性。然而，与未接种疫苗的受试者相比，关于降低接种疫苗受试者感染概率的影响的研究数据很少。在这个简短的交流中，我们描述了一些关于这个重要和当前主题的证据，提供了有用的个人反思。