ECHO 11 was identified as the primary viral agent in an outbreak of aseptic meningitis, particularly causing clinical symptoms in children over 5 years of age.
In a study of an outbreak of aseptic meningitis, ECHO 11 was the most prevalent virus isolated (24 of 52 isolations). Other enteroviruses associated with cases in the outbreak but to a lesser degree were ECHO 4 and polioviruses 1 and 3. Children over 5 years of age infected with ECHO 11 were more apt to have clinical symptoms of aseptic meningitis than younger children.
Elvin‐Lewis et al. (Tue,) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: