Anna Sick-Samuels, M.D., M.P.H.


  • Parechovirus (PeV) is a non-enveloped single-stranded RNA virus from the viral family Picornaviridae. Other members of this family include Enteroviruses (Echoviruses, Coxsackie viruses, and Poliovirus) and Rhinoviruses.
  • Four species of PeV A through D. PeV-A is a recognized human pathogen with 19 genotypes.
    • PeV-A1 (previously called echovirus 22) is commonly associated with gastrointestinal and respiratory illnesses and commonly circulates in the community.
    • PeV-A3 has a tropism for neuronal cells and is more often associated with neonatal sepsis and encephalitis. Because PeV-A3 is a less common strain, mothers may not have pre-existing protective antibodies, increasing the risk of neonatal infection.

There's more to see -- the rest of this topic is available only to subscribers.

Last updated: October 18, 2022