Question

is a highly infectious disease caused by a virus. it invades the nervous system, and can cause total paralysis in a matter of hours. it can strike at any age, but affects mainly children under three. the virus enters the body through the mouth and multiplies in the intestine.
a. tay - sachs disease
b. meningitis
c. huntingtons disease
d. poliomyelitis
e. cerebral aneurysm

Explanation:

• Tay - Sachs disease is a genetic disorder, not a viral - induced highly infectious disease.
• Meningitis can be caused by bacteria, viruses, fungi etc. But the description of "invades the nervous system and can cause total paralysis in hours, mainly affects children under three, virus enters through mouth and multiplies in intestine" is more specific to polio.
• Huntington's disease is a genetic neurodegenerative disorder.
• Cerebral aneurysm is a vascular problem, not a viral infectious disease.
• Poliomyelitis (polio) is a viral disease. The poliovirus enters through the mouth (oral - fecal route), replicates in the intestine. It can invade the nervous system and cause paralysis, especially in young children (under 5, but mainly under 3 in some cases).

Answer:

D. Poliomyelitis