منابع مشابه
Xenodiagnosis: use of mosquitoes for the diagnosis of arboviral infections.
The arboviruses have a worldwide distribution and, mosquitoes and ticks contribute principally in their transmission. In the last two decades, arboviral diseases have been recognised due to their resurgence and spread in newer geographic areas. Surveys to determine the prevalence of arboviruses in any region largely depend on the isolation attempts from the arthropods along with the serosurveys...
متن کاملTrypanosoma cruzi parasitemia observed in immunocompromised patients: the importance of the artificial xenodiagnosis.
Trypanosoma cruzi parasitemia observed in immunocompromised patients (transplant or positive HIV) occurred more frequently by the artificial xenodiagnosis method (10/38) compared with hemoculture (2/38), given the same quantity of blood. Other ways of diagnosis, like mice inoculation (5/38), QBC and buffy coat (2/38), were evaluated also. This result showed the importance of the artificial xeno...
متن کاملParasite persistence in treated chagasic patients revealed by xenodiagnosis and polymerase chain reaction.
Polymerase chain reaction (PCR) was compared with xenodiagnosis performed 20 years after trypanocidal chemotherapy to investigate parasite clearance. Eighty-five seropositive individuals for Chagas disease presenting a positive xenodiagnosis were treated with specific drugs; 37 in the acute phase and 48 in the chronic phase. Fifteen chronic asymptomatic patients received a placebo. Treatment in...
متن کاملFeeding of ticks on animals for transmission and xenodiagnosis in Lyme disease research.
Transmission of the etiologic agent of Lyme disease, Borrelia burgdorferi, occurs by the attachment and blood feeding of Ixodes species ticks on mammalian hosts. In nature, this zoonotic bacterial pathogen may use a variety of reservoir hosts, but the white-footed mouse (Peromyscus leucopus) is the primary reservoir for larval and nymphal ticks in North America. Humans are incidental hosts most...
متن کاملDetection of Borrelia persica Infection in Ornithodoros tholozani Using PCR Targeting rrs Gene and Xenodiagnosis
BACKGROUND Relapsing fever caused by Borrelia persica, is an acute tick-borne disease which is transmitted by soft ticks of Ornithodoros tholozani to human. METHODS Value of PCR and xenodiagnosis for detection of B. persica in O. tholozani ticks was compared. Sixty-four Borrelia-free ticks were fed on infected guinea pigs and used for the experiments. For xenodiagnosis, a group of 32 ticks in...
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ژورنال
عنوان ژورنال: Memórias do Instituto Oswaldo Cruz
سال: 1999
ISSN: 0074-0276
DOI: 10.1590/s0074-02761999000700052