Topic: The world's hopes for a coronavirus vaccine may run in these health care workers' veins

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The world's hopes for a coronavirus vaccine may run in these health care workers' veins

In the corner of a COVID-19 ward in Sao Paulo, Brazil, a woman cleaning the mouth of an intubated patient carries an extraordinary hope for pretty much all of us. Slipping a mouthwash-soaked brush into an elderly woman's mouth, at great personal daily risk, dentist Denise Abranches has something more than courage in her veins.

https://www.cnn.com/2020/07/27/americas/brazil-covid-19-sinovac-vaccine-intl/index.html