“Public health saved your life today and you didn’t even know it,” says Josh Sharfstein in an episode on the PBS documentary series, The Invisible Shield.

The four-part series documents how the field of public health has saved countless lives, protected people from the constant threat of disease, and increased lifespans.

The series premieres Tuesday, March 26, at 10 p.m. ET on https://www.pbs.org/ and the PBS App.

https://publichealth.jhu.edu
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