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west nile virus activity in mosquitoes and domestic animals in chiapas, méxico.prior to 2006, west nile virus (wnv) had not been definitively detected in chiapas, the southernmost state of mexico, although it circulates elsewhere in mexico and central america. we collected over 30,000 mosquitoes and blood-sampled 351 domestic animals in chiapas in search for evidence of current or recent transmission of wnv. two mosquito pools tested positive for wnv rna and 17 domestic animals tested positive for specific wnv-neutralizing antibodies, including young animals (<1 year old) ...200919281433
prevalence of leptospirosis in dairy cattle from small rural production units in toluca valley, state of mexico.in order to know the seroprevalence of leptospira spp. in stabled dairy cattle, a study was conducted from 2004 to 2006 in which 416 sera were tested using a microscopic agglutination test conducted on microplates. a collection of culture reference antigens, each representing a serogroup, was used for these tests. results showed that 10.33% (43) of the animals had antibody titers ranging from 1:100 to 1:1600. the main serovars detected in these tests were l. interrogans serovar hardjo and l. int ...200819120231
cutaneous leishmaniasis caused by members of leishmania braziliensis complex in nayarit, state of mexico.an epidemiological study was carried out in the northern mexican state, nayarit. fourteen patients with possible cutaneous leishmaniasis skin lesions gave positive montenegro skin tests. biopsies were taken from the skin ulcer and analyzed by polymerase chain reaction (pcr) with specific primers for the leishmania mexicana complex; however all biopsies were not amplified. pcr carried out with specific primers for the l. braziliensis complex resulted in the amplification of all patient dna. dna f ...200111285471
[seroepidemiology of brucellosis in mexico].brucellosis is an important and widely distributed zoonosis in mexican cattle which also affects an unknown proportion of the human population. this report presents the brucellosis antibody levels registered in the national seroepidemiology survey (nas) in sera obtained from 66,982 healthy persons from one to 98 years of age and determined by the test of plaque microagglutination. seroprevalences by states ranged from 0.24 per cent in morelos to 13.5 per cent in the state of mexico. the national ...19921631736
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