Human respiratory syncytial virus causes

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Bassel Almarie M.D.[2]

Influenza infection is caused by the influenza virus that belong to the family Orthomyxoviridae. Three types of influenza virus have been reported to cause clinical illness in humans: types A, B, and C. Influenza virus can be found in humans, as well as in poultry, pigs, and bats.

• The scientific name of the virus is respiratory syncytial virus (hRSV)
  • Other names include human orthopneumovirus or respiratory syncytial virus (RSV)^[1].
• Member of the Pneumoviridae family and Orthopneumovirus genus.
• Enveloped, negative sense, single stranded RNA virus^[2].
• Main subtypes are A and B. Most evidence suggests no difference in disease severity between both subtypes^[3].
• Lineage: Viruses > Riboviria > Orthornavirae > Negarnaviricota > Haploviricotina > Monjiviricetes > Mononegavirales (negative-sense genome single-stranded RNA viruses) > Pneumoviridae > Orthopneumovirus^[1].
• Natural hosts for hRSV are humans and chimpanzees^[4].
• Transmission directly through large droplets via nasal or oral secretions or indirectly through contact with contaminated surfaces^[5][6].

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