Isolation of <i>Culicoides-</i> and Mosquito-Borne Orbiviruses in the Southwestern Islands of Japan Between 2014 and 2019

Murota, Katsunori; Mekaru, Yuji; Araki, Miho; Suda, Yuto; Shirafuji, Hiroaki; Kobayashi, Daisuke; Isawa, Haruhiko; Yanase, Tohru

doi:10.1089/vbz.2021.0001

Cited by 8 publications

(5 citation statements)

References 61 publications

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“…Our findings extend the knowledge of the diversity of BAV distributions. YUOV was identified for the first time in the Yunnan province in Culex tritaeniorhynchus (Attoui et al, 2005), and YUOV has been isolated from vertebrates in Japan, Peru, and North America (Attoui et al, 2009;Murota et al, 2021;Viadanna et al, 2021). IgM and IgG against YUOV were detected in the serum of one patient at the China-Myanmar-Laos border in Yunnan Province, providing evidence of YUOV infection in the area (Wang et al, 2011).…”

Section: Discussionmentioning

confidence: 93%

Survey of mosquito species and mosquito-borne viruses in residential areas along the Sino–Vietnam border in Yunnan Province in China

Tian

He²,

Shang³

et al. 2023

Front. Microbiol.

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Mosquitoes are capable of carrying complex pathogens, and their feeding habits on the mammalian blood can easily mediate the spread of viruses. Surveillance of mosquito-based arbovirus enables the early prevention and control of mosquito-borne arboviral diseases. The climate and geography of Yunnan Province in China are ideal for mosquitoes. Yunnan shares borders with several other countries; therefore, there exists a high risk of international transmission of mosquito-mediated infectious diseases. Previous studies have focused more on the Sino–Laos and Sino–Myanmar borders. Therefore, we focused on the neighborhoods of Malipo and Funing counties in Wenshan Prefecture, Yunnan Province, China, which are located along the Sino–Vietnam border, to investigate the species of mosquitoes and mosquito-borne viruses in the residential areas of this region. This study collected 10,800 mosquitoes from 29 species of 8 genera and grouped to isolate mosquito-borne viruses. In total, 62 isolates were isolated and classified into 11 viral categories. We demonstrated a new distribution of mosquito-borne viruses among mosquitoes in border areas, including Tembusu and Getah viruses, which can cause animal outbreaks. In addition, Dak Nong and Sarawak viruses originating from Vietnam and Malaysia, respectively, were identified for the first time in China, highlighting the complexity of mosquito-borne viruses in the Sino–Vietnam border region. The awareness of the importance of viral surveillance and prevention measures in border areas should be further encouraged to prevent future outbreaks of potentially infectious diseases.

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Section: Discussionmentioning

confidence: 93%

Survey of mosquito species and mosquito-borne viruses in residential areas along the Sino–Vietnam border in Yunnan Province in China

Tian

He²,

Shang³

et al. 2023

Front. Microbiol.

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“…Since 2012, 6 Culicoides -borne viruses have been newly detected from vectors, which has led to an interest in understanding the island biogeography of arboviruses with transboundary properties between Taiwan and nearby islands and continents. Four of the 6 newly recorded viruses in this study were isolated in the Yaeyama Islands of Okinawa Prefecture, Japan, which are located approximately 70 nautical miles from Taiwan ( Kato et al 2016 , Murota et al 2021 , Yamamoto et al 2021 ). Among these viruses, only EHDV-7 has been isolated in Japan and China ( Yanase et al 2020 ).…”

Section: Discussionmentioning

confidence: 99%

Occurrence and surveillance of Taiwanese bovine arboviruses using hematophagous insects in dairy farms during 2012–2019

Tzeng

Ting

Chiu

et al. 2023

Journal of Medical Entomology

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Culicoides-borne viruses are an important arbovirus group causing bovine diseases. During 2012–2019, 2,525 pools consisting of 108,937 specimens of vectors were subjected to PCR detection of bovine arbovirus belonging to Orthobunyavirus, Orbivirus, and Ephemerovirus. Twelve virus RNAs, of which 6, that is, Shuni virus, Shamonda virus, and Sathuperi virus in Orthobunyavirus and Sathuvachari virus and epizootic hemorrhagic disease virus serotypes 4 and 7 in Orbivirus were detected for the first time in the area. Potential vector species were evaluated by the minimum infection rate, and the population abundance of Culicoides oxystoma, Culex tritaeniorhynchus, and Anopheles sinensis indicated that they were the main potential vector species in dairy farms in Taiwan.

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“…In Australia, serotypes 1, 2, and 5 [ 29 , 30 ] are documented. In Asia, specifically Japan, serotypes 6, 7, and 8 are prominent, alongside serotypes 1, 2, 4, 6, and 7 [ 10 , 31 , 32 ]. Meanwhile, in China, serotypes 1, 5, 6, and 7 [ 33 , 34 ] are observed.…”

Section: Discussionmentioning

confidence: 99%

Isolation of Epizootic Hemorrhagic Disease Virus Serotype 10 from Culicoides tainanus and Associated Infections in Livestock in Yunnan, China

He,

Meng,

et al. 2024

Viruses

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Two strains of viruses, JC13C644 and JC13C673, were isolated from Culicoides tainanus collected in Jiangcheng County, Yunnan Province, situated along the border area shared by China, Laos, and Vietnam. JC13C644 and JC13C673 viruses can cause cytopathic effect (CPE) in mammalian cells BHK21 and Vero cells, and cause morbidity and mortality in suckling mice 48 h after intracerebral inoculation. Whole-genome sequencing was performed, yielding complete sequences for all 10 segments from Seg-1 (3942nt) to Seg-10 (810nt). Phylogenetic analysis of the sub-core-shell (T2) showed that the JC13C644 and JC13C673 viruses clustered with the Epizootic Hemorrhagic Disease Virus (EHDV) isolated from Japan and Australia, with nucleotide and amino acid homology of 93.1% to 98.3% and 99.2% to 99.6%, respectively, suggesting that they were Eastern group EHDV. The phylogenetic analysis of outer capsid protein (OC1) and outer capsid protein (OC2) showed that the JC13C644 and JC13C673 viruses were clustered with the EHDV-10 isolated from Japan in 1998, with the nucleotide homology of 98.3% and 98.5%, and the amino acid homology of 99.6% and 99.6–99.8%, respectively, indicating that they belong to the EHDV-10. Seroepidemiological survey results demonstrated that JC13C644 virus-neutralizing antibodies were present in 29.02% (177/610) of locally collected cattle serum and 11.32% (89/786) of goat serum, implying the virus’s presence in Jiangcheng, Yunnan Province. This finding suggests that EHDV-10 circulates not only among blood-sucking insects in nature but also infects local domestic animals in China. Notably, this marks the first-ever isolation of the virus in China and its discovery outside of Japan since its initial isolation from Japanese cattle. In light of these results, it is evident that EHDV Serotype 10 exists beyond Japan, notably in the natural vectors of southern Eurasia, with the capacity to infect local cattle and goats. Therefore, it is imperative to intensify the surveillance of EHDV infection in domestic animals, particularly focusing on the detection and monitoring of new virus serotypes that may emerge in the region and pose risks to animal health.

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Isolation of Culicoides- and Mosquito-Borne Orbiviruses in the Southwestern Islands of Japan Between 2014 and 2019

Cited by 8 publications

References 61 publications

Survey of mosquito species and mosquito-borne viruses in residential areas along the Sino–Vietnam border in Yunnan Province in China

Survey of mosquito species and mosquito-borne viruses in residential areas along the Sino–Vietnam border in Yunnan Province in China

Occurrence and surveillance of Taiwanese bovine arboviruses using hematophagous insects in dairy farms during 2012–2019

Isolation of Epizootic Hemorrhagic Disease Virus Serotype 10 from Culicoides tainanus and Associated Infections in Livestock in Yunnan, China

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