tetano
Editor, Senior Moderator
J Med Virol
. 2022 Feb 16.
doi: 10.1002/jmv.27664. Online ahead of print.
Abuse of Amantadine in Poultry May Be Associated with Higher Fatality Rate of H5N1 Infections in Humans
Shu Yuan[SUP] 1 [/SUP], Si-Cong Jiang[SUP] 2 [/SUP], Zhong-Wei Zhang[SUP] 1 [/SUP], Yu-Fan Fu[SUP] 1 [/SUP], Feng Zhu[SUP] 3 [/SUP], Zi-Lin Li[SUP] 4 [/SUP], Jing Hu[SUP] 5 [/SUP]
Affiliations
Abstract
Amantadine, an anti-viral drug, has been widely used in human anti-influenza treatments. However, several highly-pathogenic avian influenza viruses show amantadine-resistance mutations in the viral matrix 2 (M2) protein. Here we analyzed global H5N1 sequencing data and calculate possible correlations between frequencies of key mutations in M2 and the mortality rates. We found that frequency of L26I/V27A mutation in M2 (isolated from both human and avian hosts) is linearly correlated with the mortality rates of human H5N1 infections. The significant correlation between M2 mutations in avians and the mortality rates in humans suggest that the pre-existence of L26I/V27A in birds may determine patient fatalities after trans-infections from avian to human hosts. 100% prevalence of L26I/V27A mutation increased the mortality rates from 51% (95% CI 37%-65%) to 89% (95% CI 88%-90%). Mutations involving Leu26 or Val27 were identified to be the major mutations emerging from drug selection pressure. Thus the emergence of the super H5N1 virus with a fatality over 90% may be attributed to the abuse of amantadine in poultry, especially in some southeast Asian countries. A more stringent control to anti-viral veterinary drugs is imperative. This article is protected by copyright. All rights reserved.
Keywords: H5N1; L26I/V27A mutation; amantadine; linear correlation; mortality rate.
. 2022 Feb 16.
doi: 10.1002/jmv.27664. Online ahead of print.
Abuse of Amantadine in Poultry May Be Associated with Higher Fatality Rate of H5N1 Infections in Humans
Shu Yuan[SUP] 1 [/SUP], Si-Cong Jiang[SUP] 2 [/SUP], Zhong-Wei Zhang[SUP] 1 [/SUP], Yu-Fan Fu[SUP] 1 [/SUP], Feng Zhu[SUP] 3 [/SUP], Zi-Lin Li[SUP] 4 [/SUP], Jing Hu[SUP] 5 [/SUP]
Affiliations
- PMID: 35170774
- DOI: 10.1002/jmv.27664
Abstract
Amantadine, an anti-viral drug, has been widely used in human anti-influenza treatments. However, several highly-pathogenic avian influenza viruses show amantadine-resistance mutations in the viral matrix 2 (M2) protein. Here we analyzed global H5N1 sequencing data and calculate possible correlations between frequencies of key mutations in M2 and the mortality rates. We found that frequency of L26I/V27A mutation in M2 (isolated from both human and avian hosts) is linearly correlated with the mortality rates of human H5N1 infections. The significant correlation between M2 mutations in avians and the mortality rates in humans suggest that the pre-existence of L26I/V27A in birds may determine patient fatalities after trans-infections from avian to human hosts. 100% prevalence of L26I/V27A mutation increased the mortality rates from 51% (95% CI 37%-65%) to 89% (95% CI 88%-90%). Mutations involving Leu26 or Val27 were identified to be the major mutations emerging from drug selection pressure. Thus the emergence of the super H5N1 virus with a fatality over 90% may be attributed to the abuse of amantadine in poultry, especially in some southeast Asian countries. A more stringent control to anti-viral veterinary drugs is imperative. This article is protected by copyright. All rights reserved.
Keywords: H5N1; L26I/V27A mutation; amantadine; linear correlation; mortality rate.