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2020 ; 9
(5
): ä Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
A Systematic Review Analyzing the Prevalence and Circulation of Influenza Viruses
in Swine Population Worldwide
#MMPMID32397138
Chauhan RP
; Gordon ML
Pathogens
2020[May]; 9
(5
): ä PMID32397138
show ga
The global anxiety and a significant threat to public health due to the current
COVID-19 pandemic reiterate the need for active surveillance for the zoonotic
virus diseases of pandemic potential. Influenza virus due to its wide host range
and zoonotic potential poses such a significant threat to public health. Swine
serve as a "mixing vessel" for influenza virus reassortment and evolution which
as a result may facilitate the emergence of new strains or subtypes of zoonotic
potential. In this context, the currently available scientific data hold a high
significance to unravel influenza virus epidemiology and evolution. With this
objective, the current systematic review summarizes the original research
articles and case reports of all the four types of influenza viruses reported in
swine populations worldwide. A total of 281 articles were found eligible through
screening of PubMed and Google Scholar databases and hence were included in this
systematic review. The highest number of research articles (n = 107) were
reported from Asia, followed by Americas (n = 97), Europe (n = 55), Africa (n =
18), and Australia (n = 4). The H1N1, H1N2, H3N2, and A(H1N1)pdm09 viruses were
the most common influenza A virus subtypes reported in swine in most countries
across the globe, however, few strains of influenza B, C, and D viruses were also
reported in certain countries. Multiple reports of the avian influenza virus
strains documented in the last two decades in swine in China, the United States,
Canada, South Korea, Nigeria, and Egypt provided the evidence of interspecies
transmission of influenza viruses from birds to swine. Inter-species transmission
of equine influenza virus H3N8 from horse to swine in China expanded the genetic
diversity of swine influenza viruses. Additionally, numerous reports of the
double and triple-reassortant strains which emerged due to reassortments among
avian, human, and swine strains within swine further increased the genetic
diversity of swine influenza viruses. These findings are alarming hence active
surveillance should be in place to prevent future influenza pandemics.