Subject(s)

Coxsackievirus Infections/diagnosis , Infant, Newborn, Diseases/diagnosis , Centrifugation, Density Gradient , Enterovirus/isolation & purification , Female , Humans , Immunoglobulin G/analysis , Immunoglobulin M/analysis , Infant, Newborn , Neutralization Tests , Pharynx/microbiology , Rectum/microbiology