poor hygiene. airborne sneezes and coughs
it was spread by airborne viruses sneezing coughing and by poor hygiene
Polio epidemic
A polio vaccine was invented in 1954. Each year after that, the number of polio cases decreased. By 1974, only 5 cases occurred. These were all people who were linked to the polio vaccine.
The first Polio epidemic was in 1894 in Vermont with 132 cases of it.
Yes
5000
polio
It was the success of the Salk Vaccine.
There are still cases of polio out there today, so we have the vaccinations if someday we were to have another breakout of the epidemic!
Polio was spread human-to-human, not by a vector.
You can't get polio from kissing. Polio is spread by the oral fecal route.
Polio is a virus that is spread when fecal contamination is ingested.