Health

Who developed the polio vaccine? User: What was the last year for a documented case of polio in the United States?


Answers

cedricwatson703

2 years ago Comment

Well Dr.Jonas Salk Developed the polio vaccine 
                                &
1979 was the last year for the polio documenter

So the first one is Dr.Jonas Salk
The second one is 1979

~Hope it helps if it does hit that tnx button plz :D