Coxsackievirus: Coxsackievirus infection is spread from person to person when an infected person does not cover their mouth when coughing or sneezing or touches someone with unwashed hands. Though most cases of coxsackievirus infection are mild, with symptoms including diarrhea and sore throat, the infection may also cause meningitis, encephalitis, chest pain, and myopericarditis. Infection in newborns may be deadly. There is no specific treatment for coxsackievirus, though acetaminophen and ibuprofen may be used to treat the symptoms.