Prevalence of Cowdria ruminantium infection in Amblyomma hebraeum ticks from heartwater-endemic areas of Zimbabwe

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cg.coverage.countryZimbabwe
cg.coverage.iso3166-alpha2ZW
cg.coverage.regionAfrica
cg.coverage.regionSouthern Africa
cg.coverage.regionEastern Africa
cg.identifier.doihttps://doi.org/10.1017/s0950268899002861en
cg.issn0950-2688en
cg.issue2en
cg.journalEpidemiology and Infectionen
cg.subject.ilriGENETICSen
cg.volume123en
dc.contributor.authorPeter, T.F.en
dc.contributor.authorPerry, Brian D.en
dc.contributor.authorO'Callaghan, C.J.en
dc.contributor.authorMedley, G.F.en
dc.contributor.authorMlambo, G.en
dc.contributor.authorBarbet, A.F.en
dc.contributor.authorMahan, S.M.en
dc.date.accessioned2013-05-06T07:00:43Zen
dc.date.available2013-05-06T07:00:43Zen
dc.identifier.urihttps://hdl.handle.net/10568/28497
dc.titlePrevalence of Cowdria ruminantium infection in Amblyomma hebraeum ticks from heartwater-endemic areas of Zimbabween
dcterms.abstractAnalysis of the transmission dynamics of Cowdria ruminantium, the tick-borne rickettsial agent of heartwater in ruminants, requires accurate measures of infection in vector populations. To obtain these, Amblyomma hebraeum ticks were collected at two heartwater-endemic locations in the lowveld and highveld regions of Zimbabwe and assessed for C. ruminantium infection with specific polymerase chain reaction (PCR) and DNA probe detection assays. At the lowveld site, 11±2% (50}446) of adult ticks and 8±5% (23}271) of nymphs carried C. ruminantium, as detected by PCR. At the highveld site, the prevalence of infection in adult ticks was 10±2% (40}392). DNA probe analysis revealed that most infections at both sites were of low intensity ; only 9% and 23% of all nymph and adult tick infections, respectively, were greater than 70000 organisms, the detection limit of the DNA probe. However, the majority (70%) of probedetectable adult tick infections were high, between 10( and 10* organisms}tick, while those within nymphs were lower, between 10& and 10' organisms}tick.en
dcterms.accessRightsOpen Access
dcterms.available1999-10-01
dcterms.bibliographicCitationEpidemiology and Infection;123(2): 309-316en
dcterms.extentp. 309-316en
dcterms.issued1999-10
dcterms.languageen
dcterms.licenseCopyrighted; all rights reserved
dcterms.publisherCambridge University Pressen
dcterms.subjectcowdria ruminantiumen
dcterms.subjectmorbidityen
dcterms.subjectamblyomma hebraeumen
dcterms.subjectmetastigmataen
dcterms.subjectbacterial diseasesen
dcterms.subjectendemicsen
dcterms.subjectisolationen
dcterms.subjectculture mediaen
dcterms.subjectpcren
dcterms.typeJournal Article

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