This review article summarizes the current knowledge on avian metapneumovirus (aMPV), highlighting the recent re-emergence of subtypes A and B in the United States. It further identifies critical research gaps regarding transmission dynamics, host-pathogen interactions, and control strategies, proposing future directions to advance diagnostic surveillance and vaccine development.
The review is an Open Access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license. Published in Viruses 2026.