Tags : vaccination

Este día en la historia

Today In History: March 26 1953

Virologist Jonas Salk announces to the public his progress to find a vaccine against polio On March 26, 1953 at 10:45 in the evening on a CBS radio broadcast for the United States, Dr. Jonas Salk talked to a country that listened to him expectantly. In recent weeks the press had picked up optimistic news […]Load more...