Which one of the following diseases causes symptoms in fewer than 1% of infected individuals,but has a mortality rate in symptomatic patients of about 20%?
A)Eastern equine encephalitis
B)Western equine encephalitis
C)St.Louis encephalitis
D)California encephalitis
E)West Nile virus encephalitis

Question

Quizplus · Accepted Answer

St. Louis encephalitis is a disease caused by a virus transmitted by mosquitoes, and it typically causes symptoms in fewer than 1% of infected individuals. However, in symptomatic patients, the mortality rate is about 20%. Eastern and Western equine encephalitis also have a high mortality rate, but they cause symptoms in a higher percentage of infected individuals (around 30%). California encephalitis and West Nile virus encephalitis have much lower mortality rates (less than 1%) even in symptomatic patients.

Which One of the Following Diseases Causes Symptoms in Fewer