Avian and human metapneumovirus

Shobha Broor1, Preeti Bharaj

  • 1Department of Microbiology, All India Institute of Medical Sciences Hospital, New Delhi, India. shobha.broor@gmail.com

Insights

Pneumovirus infections pose risks to both humans and animals, causing respiratory illnesses. Understanding pneumovirus biology and disease pathogenesis is key to developing effective vaccines and therapies.

Area of Science:

  • Virology
  • Infectious Diseases
  • Comparative Medicine

Background:

  • Pneumovirus infections represent a significant challenge in human and veterinary medicine.
  • Avian pneumovirus (aMPV) and human metapneumovirus (hMPV) are significant respiratory pathogens affecting birds and humans, respectively.
  • These viruses share characteristics necessitating their classification into the new Metapneumovirus genus due to distinct genomic organization and low sequence identity with existing paramyxoviruses.

Purpose of the Study:

  • To highlight the significance of pneumovirus infections in both human and veterinary contexts.
  • To underscore the importance of understanding pneumovirus biology and pathogenesis.
  • To identify potential avenues for therapeutic and preventative strategies.

Main Methods:

  • Comparative genomic analysis to establish taxonomic classification.
  • Pathogenesis studies in relevant host models (implied).
  • Review of existing literature on pneumovirus biology and disease.

Main Results:

  • Pneumoviruses, including aMPV and hMPV, are distinct pathogens causing respiratory disease in multiple species.
  • aMPV and hMPV have been reclassified into the genus Metapneumovirus based on genomic differences.
  • Understanding disease mechanisms is crucial for developing interventions.

Conclusions:

  • Pneumovirus infections require continued research attention due to their impact on public and animal health.
  • The classification of aMPV and hMPV into the Metapneumovirus genus reflects their unique biological characteristics.
  • Further research into pneumovirus biology and pathogenesis will facilitate the development of novel vaccines and therapies, including combined antiviral and immunomodulatory approaches.

Related Concept Videos

Atypical Pneumonia01:14

Atypical Pneumonia

Atypical pneumonia, often caused by Mycoplasma pneumoniae, is a form of pulmonary infection that differs from the classical presentation of bacterial pneumonia in both its cause and clinical symptoms. Mycoplasma pneumoniae is a pleomorphic bacterium notable for its lack of a rigid cell wall. This structural characteristic imparts resistance to beta-lactam antibiotics and significantly influences the bacterium’s behavior within the human host.Other pathogens responsible for the disease include...
Respiratory Syncytial Virus Disease01:29

Respiratory Syncytial Virus Disease

Human respiratory syncytial virus (RSV) is a widespread pathogen that primarily targets infants and young children but also poses a serious health risk to elderly and immunocompromised individuals. Belonging to the Pneumoviridae family, RSV is a negative-sense, single-stranded RNA virus within the Pneumovirus genus. Its global health burden is significant, with millions of cases annually resulting in hospitalizations and mortality, particularly in resource-limited settings. Although most...
Viral Recombination00:57

Viral Recombination

Cells are sometimes infected by more than one virus at once. When two viruses disassemble to expose their genomes for replication in the same cell, similar regions of their genomes can pair together and exchange sequences in a process called recombination. Alternatively, viruses with segmented genomes can swap segments in a process called reassortment.
Human Virome01:26

Human Virome

The human body harbors a vast and diverse viral community known as the human virome. The virome includes bacteriophages that infect bacteria, and eukaryotic viruses that infect human cells. Transient dietary and environmental viruses also contribute to this dynamic ecosystem. Estimates suggest the human body may contain on the order of 10¹³ viral particles, though abundance varies widely by body site and detection method.Comprehensive characterization of the virome has become possible only with...
Viral Mutations00:36

Viral Mutations

A mutation is a change in the sequence of bases of DNA or RNA in a genome. Some mutations occur during replication of the genome due to errors made by the polymerase enzymes that replicate DNA or RNA. Unlike DNA polymerase, RNA polymerase is prone to errors because it is not capable of “proofreading” its work. Viruses with RNA-based genomes, like HIV, therefore accrue mutations faster than viruses with DNA-based genomes. Because mutation and recombination provide the raw material for adaptive...
Influenza01:27

Influenza

Influenza is an acute, highly communicable viral disease that affects the respiratory tract and is responsible for seasonal epidemics worldwide. Influenza A is the most prevalent type associated with widespread outbreaks and is subtyped based on two surface glycoproteins: hemagglutinin (H) and neuraminidase (N), as in H1N1. These glycoproteins are essential for viral infectivity, transmission, and immune recognition. Transmission occurs primarily through respiratory droplets and contaminated...