When he was 9 years old, Salk was inoculated by the polio vaccine developed by his father, Dr. Jonas Salk. Today, he is an optimistic about a COVID-19 vaccine but offers a warning.
(Image credit: AP)
When he was 9 years old, Salk was inoculated by the polio vaccine developed by his father, Dr. Jonas Salk. Today, he is an optimistic about a COVID-19 vaccine but offers a warning.
(Image credit: AP)