Autor: CDC

Título: Standing at the podium during his 1988 Centers for Disease Control visit, this photograph showed Dr. Jonas Salk, creator of the first polio vaccine in 1955, fielding questions during his presentation.

Data: 1988

Origem: CDC Public Health Image Library, photo ID # 7356

Fonte: https://pt.m.wikipedia.org/wiki/Ficheiro:Jonas_Salk_1988.jpg

Licença: This image is in the public domain and thus free of any copyright restrictions. As a matter of courtesy we request that the content provider be credited and notified in any public or private usage of this image.

O médico Jonas Salk anunciou a descoberta de uma vacina contra a poliomielite


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