Powassan-virus
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Ixodes affinis
Ixodes affinis is a hard-bodied tick species distributed across the southeastern United States, Mexico, Central America, and South America. Unlike its congener Ixodes scapularis, this species does not bite humans but serves as a competent vector for Borrelia burgdorferi sensu stricto, the causative agent of Lyme disease. Immature stages feed on birds and small mammals, while adults parasitize larger mammals including deer and dogs. Its expanding range into southeastern Virginia and association with migratory birds has raised concerns about its role in pathogen dispersal.
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I.-malayensisI.-marxiI.-masloviI.-matopiI.-minorI.-monospinosusI.-moreliI.-moschiferiI.-murisI.-murreletiI.-myospalacisI.-nchisiensisI.-necromysI.-neitziI.-nipponensisI.-nuttalliI.-ochotonaeI.-okapiaeI.-oldiI.-ornithorhynchiI.-ovatusI.-pacificusI.-pararicinusI.-pavlovskyiI.-percavatusI.-peromysciI.-persulcatusI.-pomerantziI.-pterodromaeI.-quadratusI.-raccoonisI.-rageauiI.-randrianasoloiI.-rasusI.-redikorzeviI.-ricinusI.-rothschildiI.-rotundatusI.-rubicundusI.-rugicollisI.-rugosusI.-sapeloensisI.-sarsiI.-scapularisI.-schillingsiI.-sculptusI.-semenoviI.-soricisI.-spinaeI.-steiniI.-stilesiI.-stromiI.-subterranusI.-tancitariusI.-tanukiI.-tapirusI.-tasmaniI.-tayloriI.-tertiariusI.-texanusI.-theileraeI.-thomasaeI.-tovariI.-transvaalensisI.-triangulicepsI.-trichosuriI.-turdusI.-uriaeI.-vandenbergiI.-vanidicusI.-ventalloiI.-vespertilionisI.-victoriensisI.-walkeraeI.-werneriI.-woodiI.-zaglossiI.-zairensistick-taxonomytick-systematicstick-phylogenytick-evolutiontick-biogeographytick-ecologytick-physiologytick-behaviortick-reproductiontick-developmenttick-nutritiontick-metabolismtick-respirationtick-excretiontick-osmoregulationtick-neurobiologytick-sensory-biologytick-chemoreceptiontick-thermoreceptiontick-mechanoreceptiontick-photoreceptiontick-circadian-rhythmtick-biological-clocktick-seasonalitytick-diapausetick-overwinteringtick-cold-hardinesstick-desiccation-resistancetick-water-balancetick-cuticletick-moltingtick-ecdysistick-growthtick-feedingtick-engorgementtick-blood-mealtick-digestiontick-salivationtick-saliva-compositiontick-salivary-gland-transcriptometick-salivary-proteometick-pharmacologytick-toxicologytick-venomtick-paralysis-toxintick-borne-pathogentick-borne-virustick-borne-bacteriumtick-borne-protozoantick-borne-helminthtick-borne-rickettsiatick-borne-ehrlichiatick-borne-anaplasmatick-borne-borreliatick-borne-babesiatick-borne-theileriatick-borne-hepatozoontick-borne-coxiellatick-borne-francisellatick-borne-bartonellatick-borne-chlamydiatick-borne-mycoplasmatick-borne-spiroplasmatick-borne-arbovirustick-borne-flavivirustick-borne-bunyavirustick-borne-reovirustick-borne-orbivirustick-borne-coltivirustick-borne-nairovirustick-borne-phlebovirustick-borne-thogotovirustick-borne-orthomyxovirustick-borne-arenavirustick-borne-hantavirustick-borne-paramyxovirustick-borne-rhabdovirustick-borne-bornavirustick-borne-filovirustick-borne-coronavirustick-borne-poxvirustick-borne-herpesvirustick-borne-adenovirustick-borne-papillomavirustick-borne-polyomavirustick-borne-circovirustick-borne-parvovirustick-borne-anellovirustick-borne-dependovirustick-borne-tenuivirustick-borne-deltavirustick-borne-hepadnavirustick-borne-retrovirustick-borne-lentivirustick-borne-spumavirustick-borne-metavirustick-borne-pseudovirustick-borne-hemivirustick-borne-novirhabdovirustick-borne-peribunyavirustick-borne-phenuivirustick-borne-bandavirustick-borne-phasivirustick-borne-tulasvirustick-borne-orthonairovirustick-borne-shavivirustick-borne-sathuperi-virustick-borne-salehabad-virustick-borne-dera-ghazi-khan-virustick-borne-hughes-virustick-borne-farallon-virustick-borne-punta-salinas-virustick-borne-sapphire-II-virustick-borne-zirqa-virustick-borne-keterah-virustick-borne-thiafora-virustick-borne-erve-virustick-borne-malsoor-virustick-borne-tibet-virustick-borne-qalyub-virustick-borne-yogue-virustick-borne-kasokero-virustick-borne-lebombo-virustick-borne-nyamanini-virustick-borne-midway-virustick-borne-tokar-virustick-borne-absettarov-virustick-borne-hypr-virustick-borne-kumlinge-virustick-borne-omsk-hemorrhagic-fever-virustick-borne-langat-virustick-borne-louping-ill-virustick-borne-kyasanur-forest-disease-virustick-borne-alkhurma-hemorrhagic-fever-virustick-borne-powassan-virustick-borne-deer-tick-virustick-borne-heartland-virustick-borne-bourbon-virustick-borne-colorado-tick-fever-virustick-borne-eyach-virustick-borne-banna-virustick-borne-seadornavirustick-borne-great-island-virustick-borne-kemerovo-virustick-borne-lipovnik-virustick-borne-tribec-virustick-borne-chobar-gorge-virustick-borne-wad-Medani-virustick-borne-dugbe-virustick-borne-crimean-congo-hemorrhagic-fever-virustick-borne-nairobi-sheep-disease-virustick-borne-ganjam-virustick-borne-bandia-virustick-borne-sierra-nevada-virustick-borne-lone-star-virustick-borne-severe-fever-with-thrombocytopenia-syndrome-virustick-borne-huaiyangshan-virustick-borne-guertu-virustick-borne-Alongshan-virustick-borne-wenzhou-virustick-borne-wuhan-virustick-borne-yongjia-virustick-borne-chiba-virustick-borne-natori-virustick-borne-odawara-virustick-borne-kowloon-virustick-borne-tamanavirusIxodes marxi
Squirrel Tick
Ixodes marxi, commonly known as the squirrel tick, is a hard tick species in the family Ixodidae. It is a documented vector of Powassan virus and has been observed to transmit this pathogen to humans. The species is distributed across multiple U.S. states and Canadian provinces. Nymphal stages have been recorded questing on vegetation.