In the USA, COVID-19 vaccines became available in mid-December, 2020, with adults aged 65 years and older among the first groups prioritised for vaccination. We estimated the national-level impact of the initial phases of the US COVID-19 vaccination programme on COVID-19 cases, emergency department visits, hospital admissions, and deaths among adults aged 65 years and older.

Matéria original


Dasabuvir Inhibits Human Norovirus Infection in Human Intestinal Enteroids


Chamada Pública Nº 11/2021 – Prorrogação de prazo