04/12/2022

History Photos

7 of 27

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

In 1955, the Salk vaccine against polio was declared safe and effective. Dr. Jonas Edward Salk #JonasSalk

No comments yet

Comment Guidelines Hashtags Help