Human Parvovirus 4: A harmless bystander or a pathogen of severe acute respiratory illness

Int J Infect Dis. 2020 Jan:90:21-25. doi: 10.1016/j.ijid.2019.10.001. Epub 2019 Oct 9.

Abstract

Introduction: Severe Acute Respiratory Infection (SARI) is an important cause of morbidity and mortality worldwide, caused by a large number of viral and bacterial agents. PARV4 is a recently identified virus detected in human blood and variety of tissues, but its disease association with SARI could not be established.

Objective: In the present case control study, we aim to investigate the association of PARV4 with SARI.

Methods: The Nasal and Throat swab (NS/TS) samples of 241 cases and 146 healthy controls were tested for most common respiratory viruses and PARV4 by real-time PCR.

Results: PARV4 was detected in 64(26.55%) SARI cases and only one healthy control (0.68%). PARV4 was the most common viral agent detected in SARI cases. A strong association of PARV4 is seen with severe respiratory illness.

Conclusion: Detection of PARV4 in a significantly higher number of SARI cases, in comparison with controls, suggests association of PARV4 with SARI. PARV4 genotype 2 is the only circulating strain detected in our study.

Keywords: Genotype; India; PARVO 4 virus; Severe acute respiratory illness.

MeSH terms

  • Adolescent
  • Adult
  • Case-Control Studies
  • Child
  • Child, Preschool
  • DNA, Viral / blood
  • DNA, Viral / genetics
  • Female
  • Humans
  • Infant
  • Male
  • Middle Aged
  • Nose / virology
  • Parvoviridae Infections / diagnosis
  • Parvoviridae Infections / virology*
  • Parvovirus / classification
  • Parvovirus / genetics
  • Parvovirus / isolation & purification*
  • Pharynx / virology
  • Real-Time Polymerase Chain Reaction
  • Respiratory Tract Infections / diagnosis
  • Respiratory Tract Infections / virology*
  • Young Adult

Substances

  • DNA, Viral