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The percentage of positive hMPV tests (averaged over three weeks) peaked in the U.S. during mid-March at about 19% for antigen tests and 11% for PCR tests, data show.
The graph above shows the weekly percentage of HMPV-positive tests, as reported to the National Respiratory and Enteric Virus Surveillance System, updated on Jan. 13, 2025. (CDC)
"HMPV stands for human metapneumovirus, which is a respiratory virus typically seen in the winter season," Dr. Zachary Hoy, MD, infectious disease specialist at Pediatrix, told Parade. "It can ...
Human metapneumovirus (HMPV or hMPV) is a negative-sense single-stranded RNA virus of the family Pneumoviridae and is closely related to the avian metapneumovirus (AMPV) subgroup C. It was isolated for the first time in 2001 in the Netherlands by using the RAP-PCR (RNA arbitrarily primed PCR ) technique for the identification of unknown viruses ...
The virus can be spread after only a few days after the infection which suggests that this virus has no latency period. [4] Because of the human MPV, found in 2001, it is not defined as zoonotic. [2] Even though there is a great homology between hMPV and aMPV-C, no infections of the aMPV-C in humans have been noticed. [6]
In immunosuppressed people, parainfluenza virus infections can cause severe pneumonia, which can be fatal. [ 19 ] HPIV-1 and HPIV-2 have been demonstrated to be the principal causative agent behind croup ( laryngotracheobronchitis ), which is a viral disease of the upper airway and is mainly problematic in children aged 6–48 months of age.
Public health experts are warning of a ‘quad-demic’ this winter. Here’s where flu, COVID, RSV, and norovirus are spreading
West Nile virus was accidentally introduced into the US in 1999 and by 2003 had spread to almost every state with over 3,000 cases in 2006. Other species of Aedes as well as Culex and Culiseta are also involved in the transmission of disease. [12] Myxomatosis is spread by biting insects, including mosquitoes. [13]