1. Brazil's national health care system at risk for losing its universal character;Azevedo E Silva;Am J Public Health,2020
2. Coronavirus COVID-19 Global Cases by the Center for Systems Science and Engineering (CSSE) at Johns Hopkins University (2021). Available at: https://coronavirus.jhu.edu/map.html (Accessed 01/18/2021).
3. Three-quarters attack rate of SARS-CoV-2 in the Brazilian Amazon during a largely unmitigated epidemic;Buss;Science,2021
4. Covid-19: Brazil hospitals 'run out of oxygen' for virus patients https://www.bbc.com/news/world-latin-america-55670318
5. [Police seize 33 oxygen cylinders hidden on truck in Manaus] In Portuguese. https://noticias.uol.com.br/saude/ultimas-noticias/redacao/2021/01/15/policia-apreende-33-cilindros-de-oxigenio-escondidos-em-caminhao-em-manaus.htm