Polio also known as poliomyelitis is a highly contagious disease caused by a virus that attacks the nervous system. Children younger than 5 years old are more likely to contact the virus than any other group. According to W.H.O, one… Read More
Educational Research Project Topics and Materials Resource Center
Polio also known as poliomyelitis is a highly contagious disease caused by a virus that attacks the nervous system. Children younger than 5 years old are more likely to contact the virus than any other group. According to W.H.O, one… Read More