Echovirus 23 is now classified as Human parechovirus 2. Immunogen: Picornavirus, Enterovirus, Echovirus 23, Strain Williamson Source of antibody: Rhesus monkey Propagated in: rhesus monkey kidney cells in tissue culture Adjuvant: 1 part Arlacel A plus 9 parts Bayol F with equal amounts of undiluted suspension of virus 4C |