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mosquito collection in endemic areas of japanese encephalitis in hokkaido, japan.a study was conducted during 1985 and 1986 to evaluate the roles of mosquito species as possible vectors of japanese encephalitis (je) virus in hokkaido. the number of culex tritaeniorhynchus was very low among the four pig farms where outbreaks of abortion caused by je virus were observed in swine populations. at one farm near sapporo, only one cx. tritaeniorhynchus was found among a total of 510 mosquitoes collected during the survey period from july to october 1985, even when je virus activit ...19892575185
getah virus in aedes vexans nipponii and culex tritaeniorhynchus: vector susceptibility and ability to transmit.vector competences of aedes (ae.) vexans nipponii (nip.) and culex (cx.) tritaeniorhynchus to getah virus were assessed by using a membrane feeding technique. the getah virus was present at high titer in both species of mosquitoes after 21 days of extrinsic incubation at 28 degrees c. infection rates on 21 post-feeding were 100 per cent (4/4) for ae. vexans nip. at a virus dosage of 10(5.3) pfu/ml and 60 per cent (3/5) for cx. tritaeniorhynchus at similar virus dosage. more than 10(3.5) pfu of v ...19836312927
mosquito surveillance in the demilitarized zone, republic of korea, during an outbreak of plasmodium vivax malaria in 1996 and 1997.since 1993, more than 2,000 cases of vivax malaria have occurred in the republic of korea in an epidemic that ended nearly 20 malaria-free years. most malaria has occurred in the northwestern part of the country, mainly affecting korean military personnel. as a part of an operational surveillance effort, we sampled mosquitoes in and near the demilitarized zone (paju county, kyonggi province) during the last 2 wk of july in 1996 and from may 15 to september 10 in 1997. the 1st year, landing colle ...200010901633
collection of adult and larval mosquitoes in u.s. army compounds in the republic of korea during 1979~1983.this paper is the result of adult female mosquito and larval collection in u.s. army installations in korea from 1979 to 1983. new jersey light traps ere operated for ault collection from may to october. the primary concern of this surveillance is to determine when to recommend insecticide spraying for mosquito control in the army areas. the 5th preventive medicine unit have developed an "index" level of female mosquitoes in a light trap similar to other u.s.army agencies in other parts of the w ...198412891039
distribution and mosquito hosts of chaoyang virus, a newly reported flavivirus from the republic of korea, 2008-2011.in total, 183,602 female culicine mosquitoes were captured by mosquito magnet, black light, and new jersey light traps, and manual aspiration of resting blood-fed mosquitoes, in the republic of korea from 2008 to 2011. culicine mosquitoes were identified to species, placed in pools of up to 30 mosquitoes each, and screened for flavivirus rna by using an sybr green i-based reverse transcription-polymerase chain reaction assay. thirty-two of the 8,199 pools assayed were positive by quantitative po ...201424724298
epidemiological studies on malayan filariasis in an inland area in kyungpook, korea 3. ecological survey of vector mosquitoes of brugia malayi.the species composition, population density, and seasonal prevalence of vector mosquitoes in an inland area of kyungpook province were studied, based on light trap and human bait trap collections, and the recent patterns of infestation for infective larvae of brugia malayi in these vector hosts were investigated from may to november in 1985. nine species in four genera of mosquitoes were collected by light trap, human bait trap, and/or by nets. anopheles sinensis wiedemann was the most abundant ...198612886104
[finding of the subspecies aedes vexans nipponii theobald 1907 in georgia]. 19826460926
isolation and genomic characterization of chaoyang virus strain rok144 from aedes vexans nipponii from the republic of korea.during june 2003, mosquito surveillance was conducted at a us army installation and a us military training site 2 km south of the demilitarized zone, republic of korea. mosquitoes were collected using mosquito magnets™, sorted to species, and assayed for the presence of arboviruses. from the 3,149 mosquitoes that were sorted into 126 pools, one aedes vexans nipponii pool (out of 73 pools) tested positive for flavivirus rna by reverse transcription-pcr. after isolation from c6/36 cell culture sup ...201323127596
nationwide surveillance of west nile virus targeting mosquitoes and dead birds from april 2004 through march 2007 in japan.we conducted nationwide west nile virus (wnv) surveillance targeting mosquitoes and dead birds to reveal whether the virus and its potential vectors are present in japan. a total of 12 766 mosquitoes and 230 dead birds were collected in april 2004-march 2005 (the 2004-2005 period), 10 755 mosquitoes and 267 dead birds in april 2005-march 2006 (the 2005-2006 period), and 8624 mosquitoes and 245 dead birds in april 2006-march 2007 (the 2006-2007 period). the species of most of the mosquitoes colle ...201120163573
comparative analysis of genomes of tick-borne encephalitis virus strains isolated from mosquitoes and ticks.the tick-borne encephalitis virus (tbev) strain lazo mp36 was isolated from the pool of mosquitoes aedes vexans collected in lazo region of khabarovsk territory in august 2014. phylogenetic analysis of the strain lazo mp36 complete genome (genbank accession number kt001073) revealed its correspondence to the tbev far eastern subtype and differences from the following strains: 1) from ticks ixodes persulcatus p. schulze, 1930 [vaccine strain 205 (jx498939) and strains khekhtzir 1230 (kf880805), c ...201829323844
comparison of adult mosquito black-light and light-emitting diode traps at three cowsheds located in malaria-endemic areas of the republic of korea.adult mosquito surveillance and field trials evaluated selected commercially available ultraviolet black-light (bl) and light-emitting diode (led) traps at three sites where vivax malaria is endemic from may to october 2015 in northwestern republic of korea. collections totaled 283,929 adult mosquitoes (280,355 [98.74%] females and 3,574 [1.26%] males) comprising 17 species (including six members of the anopheles hyrcanus group) belonging to six genera. the four most predominant female species c ...201728082650
[genetic characterisation of powassan virus (powv) isolated from haemophysalis longicornis ticks in primorye and two strains of tick-borne encephalitis virus (tbev) (flaviviridae, flavivirus): alma-arasan virus (aav) isolated from ixodes persulcatus ticks in kazakhstan and malyshevo virus isolated from aedes vexans nipponii mosquitoes in khabarovsk kray].the complete genomes of the three tick-borne flaviviruses (genus flavivirus, fam. bunyaviridae) were sequenced: povassan virus (powv, strain leiv-3070prm, isolated from haemophysalis logicornis in primorsky krai, russia in 1977), alma-arasan virus (aav, strain leiv-1380kaz, isolated from ixodes persulcatus ticks in kazakhstan in 1977) and malyshevo virus (isolated from a pool of aedes vexans nipponii mosquitoes, in the khabarovsk krai, russia in 1978). it is shown that aav and malyshevo virus ar ...201425895206
study of flying height of culicid species in the northern part of the republic of korea.the vertical distribution of mosquitoes (diptera, culicidae) was evaluated in paju county in northern south korea by using centers for disease control and prevention (cdc) miniature light traps with ultraviolet light and dry ice (co2) as attractants. cdc traps were placed at 1, 3 and 5 m above the ground near rice paddies in a relatively open agricultural ara. traps wer hung on two scaffold towers (6 m height) spaced approximately 300 m aprt. each trap operated 9 nights from august 3 to 16, 2002 ...200617019769
a novel flavivirus detected in two aedes spp. collected near the demilitarized zone of the republic of korea.flaviviruses comprise a large and diverse group of positive-stranded rna viruses, including tick-, mosquito- and unknown-vector-borne flaviviruses. a novel flavivirus was detected in pools of aedes vexans nipponii (n=1) and aedes esoensis (n=3) collected in 2012 and 2013 near the demilitarized zone (dmz), republic of korea (rok). phylogenetic analyses of the ns5, e gene and complete polyprotein coding sequence (cds) showed that the novel virus fell within the aedes-borne flaviviruses (abfvs), wi ...201728555540
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