Harrington WN, Turner JCM, Barman S, Feeroz MM, Ha. Longitudinal Active Avian Influenza Surveillance in Bangladesh From 2017-2022 Reveals Differential IAV and H5 Infection and Viral Burden Associated With Bird Species, Sex, and Age. Transbound Emerg Dis. 2024 Dec 13;2024:5569836
Influenza viruses are a major global health burden with up to 650,000 associated deaths annually. Beyond seasonal illness, influenza A viruses (IAVs) pose a constant pandemic threat due to novel emergent viruses that have evolved the ability to jump from their natural avian hosts to humans. Because of this threat, active surveillance of circulating IAV strains in wild and domestic bird populations is vital to our pandemic preparedness and response strategies. Here, we report on IAV surveillance data collected from 2017 to 2022 from wild and domestic birds in Bangladesh. We note evidence to suggest that male birds show a higher risk of IAV, including highly pathogenic avian influenza (HPAI) A(H5) virus, positivity than female birds. The data was stratified to control for selection bias and confounding variables to test the hypothesis that male birds are at a higher risk of IAV positivity relative to female birds. The association of IAV and A(H5) largely held in each stratum, and double stratification suggested that the phenomena was largely specific to ducks. Finally, we show that chickens, male birds, and juvenile birds generally have higher viral loads compared to their counterparts. These observations warrant further validation through active surveillance across various populations. Such efforts could significantly contribute to the enhancement of pandemic prediction and risk assessment models.
See Also:
Latest articles in those days:
- [preprint]The mammalian-adaptive PB2-E627K substitution preserves viral fitness of clade 2.3.4.4b H5N1 HPAIV in birds 10 hours ago
- Mallard super-shedders of avian influenza exhibit distinct cloacal microbial abundance profiles 14 hours ago
- A digitally immune-optimized influenza vaccine broadly neutralizes swine and human H1N1 influenza viruses and protects from heterologous challenge 14 hours ago
- Associations between vaccine misinformation and influenza vaccine uptake: a population-based interrupted time-series study in China 15 hours ago
- Infection and transmission dynamics of bovine and human influenza A H5N1 viruses in mouse and hamster models 15 hours ago
[Go Top] [Close Window]


