Avian influenza H5N1 viral and bird migration networks in Asia

Tian, Huaiyu; Zhou, Sen; Dong, Lü; Boeckel, Thomas P. Van; Cui, Yu‐Jun; Newman, Scott H.; Takekawa, John Y.; Prosser, Diann J.; Xiao, Xiangming; Wu, Yarong; Cazelles, Bernard; Huang, Shanqian; Yang, Ruifu; Grenfell, Bryan T.; Xu, Bing

doi:10.1073/pnas.1405216112

Cited by 192 publications

(175 citation statements)

References 52 publications

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“…24 Recently, Tian and others showed that movement of the highly pathogenic avian influenza virus H5N1 is closely associated with known bird migration routes in Asia. 25 Thus, there is a very good evidence that migratory birds play an important role in the dissemination of the main tick vector of CCHFV and spread of H5N1. [21][22][23][24][25] Evidence that migratory birds may play a role in the distribution of CCHFV in Europe and spread of H5N1 in Asia point to the expectation that SFTSV will have a similarly wide range.…”

Section: Discussionmentioning

confidence: 99%

“…25 Thus, there is a very good evidence that migratory birds play an important role in the dissemination of the main tick vector of CCHFV and spread of H5N1. [21][22][23][24][25] Evidence that migratory birds may play a role in the distribution of CCHFV in Europe and spread of H5N1 in Asia point to the expectation that SFTSV will have a similarly wide range. Adults, nymphs, and larvae of H. longicornis were found on Z. aurea, T. hortulorum, Halcyon coromanda, and P. nympha in South Korea.…”

Section: Discussionmentioning

confidence: 99%

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Phylogenetic Analysis of Severe Fever with Thrombocytopenia Syndrome Virus in South Korea and Migratory Bird Routes Between China, South Korea, and Japan

Yun¹,

Heo²,

Kim³

et al. 2015

The American Society of Tropical Medicine and Hygiene

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Abstract. Severe fever with thrombocytopenia syndrome (SFTS) is a tick-borne viral disease. The SFTS virus (SFTSV) has been detected in the Haemaphysalis longicornis, which acts as a transmission host between animals and humans. SFTSV was first confirmed in China in 2009 and has also been circulating in Japan and South Korea. However, it is not known if a genetic connection exists between the viruses in these regions and, if so, how SFTSV is transmitted across China, South Korea, and Japan. We therefore hypothesize that the SFTSV in South Korea share common phylogenetic origins with samples from China and Japan. Further, we postulate that migratory birds, well-known carriers of the tick H. longicornis, are a potential source of SFTSV transmission across countries. Our phylogenetic analysis results show that the SFTSV isolates in South Korea were similar to isolates from Japan and China. We connect this with previous work showing that SFTSV-infected H. longicornis were found in China, South Korea, and Japan. In addition, H. longicornis were found on migratory birds. The migratory bird routes and the distribution of H. longicornis are concurrent with the occurrence of SFTSV. Therefore, we suggest that migratory birds play an important role in dispersing H. longicornis-borne SFTSV.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Phylogenetic Analysis of Severe Fever with Thrombocytopenia Syndrome Virus in South Korea and Migratory Bird Routes Between China, South Korea, and Japan

Yun¹,

Heo²,

Kim³

et al. 2015

The American Society of Tropical Medicine and Hygiene

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“…rivers and lakes), whilst diverse poultry AIVs have been reported in Wuhan, no H7N9 has been documented to date (Su et al, 2015). In addition, both Zhejiang and Hubei represent habitats of the migratory birds that follow the east Asian-Australasian flyway (Tian et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Diversity and evolution of avian influenza viruses in live poultry markets, free-range poultry and wild wetland birds in China

Chen

Lin

Guo

et al. 2016

Journal of General Virology

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The wide circulation of novel avian influenza viruses (AIVs) highlights the risk of pandemic influenza emergence in China. To investigate the prevalence and genetic diversity of AIVs in different ecological contexts, we surveyed AIVs in live poultry markets (LPMs), free-range poultry and the wetland habitats of wild birds in Zhejiang and Hubei provinces. Notably, LPMs contained the highest frequency of AIV infection, and the greatest number of subtypes (n59) and subtype co-infections (n514), as well as frequent reassortment, suggesting that they play an active role in fuelling AIV transmission. AIV-positive samples were also identified in wild birds in both provinces and free-range poultry in one sampling site close to a wetland region in Hubei. H9N2, H7N9 and H5N1 were the most commonly sampled subtypes in the LPMs from Zhejiang, whilst H5N6 and H9N2 were the dominant subtypes in the LPMs from Hubei. Phylogenetic analyses of the whole-genome sequences of 43 AIVs revealed that three reassortant H5 subtypes were circulating in LMPs in both geographical regions. Notably, the viruses sampled from the wetland regions and free-range poultry contained complex reassortants, for which the origins of some segments were unclear. Overall, our study highlights the extent of AIV genetic diversity in two highly populated parts of central and south-eastern China, particularly in LPMs, and emphasizes the need for continual surveillance.

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“…This could related to activity of wild birds migration and virus activity in low temperature seasons. In the study of 2015 in Asia were found that a closely association between bird migration networks in Asia and time of H5N1 outbreaks [14]. Furthermore, Asia and North Africa's low temperature in winter with cold and dry weather (especially January and February) increase poultry outbreaks and H5N1 transmission, this lead increase of human infection.…”

Section: Discussionmentioning

confidence: 98%

Epidemiological parameter changes of global Avian Influenza H5N1 over two decades, from 1997 to 2017

Haji

Babakir‐Mina

Gubari

2017

KJAR

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(n=143) respectively. Case fatality rates were 50.7%. In conclusion most cases were in second decade than first decade of (H5N1) outbreak, but death were more in first decade, Also most cases were in low temperature seasons and in very young children but death were more in adults. In first decade, morbidity were more in Asia countries like China, Vietnam, and Indonesia but in second decade, mortality were more in North Africa (Egypt). However, cases were more in Egypt than Indonesia but deaths were more in Indonesia. H5N1 virus must be currently studied and its controlling is highly requested.

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Avian influenza H5N1 viral and bird migration networks in Asia

Cited by 192 publications

References 52 publications

Phylogenetic Analysis of Severe Fever with Thrombocytopenia Syndrome Virus in South Korea and Migratory Bird Routes Between China, South Korea, and Japan

Phylogenetic Analysis of Severe Fever with Thrombocytopenia Syndrome Virus in South Korea and Migratory Bird Routes Between China, South Korea, and Japan

Diversity and evolution of avian influenza viruses in live poultry markets, free-range poultry and wild wetland birds in China

Epidemiological parameter changes of global Avian Influenza H5N1 over two decades, from 1997 to 2017

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