| simulium species of the amazonicum group as vectors of mansonella ozzardi in the brazilian amazon. | experimental infection with mansonella ozzardi of common haematophagous diptera collected at a ticuna indian village on the upper reaches of the solimões river in the brazilian amazon, showed that simulium amazonicum and simulium n.sp. are capable of supporting full development of the parasite. natural infections with this filaria were found in both species including infective larvae in simulium n.sp. no development of m. ozzardi occurred in mansonia amazonensis, culicoides insinuatus or lepisel ... | 1980 | 7010699 |
| human onchocerciasis in brazil: an overview. | human onchocerciasis was recently discovered in brazil among yanomámi indians living along the border region with venezuela in the states of amazonas and roraima. the article reports on the history of the disease's discovery, its distribution, and incrimination of vector simuliid species. the literature that has been generated on the parasite, its vectors, and control of the disease is critically analyzed as well as the organization of epidemiological surveys and the control program developed by ... | 2002 | 12244349 |
| detection of onchocerca volvulus (nematoda: onchocercidae) infection in vectors from amazonian brazil following mass mectizan distribution. | detection of onchocerca volvulus in simulium populations is of primary importance in the assessment of the effectiveness of onchocerciasis control programs. in brazil, the main focus of onchocerciasis is in the amazon region, in a yanomami reserve. the main onchocerciasis control strategy in brazil is the semi-annually mass distribution of the microfilaricide ivermectin. in accordance with the control strategy for the disease, polymerase chain reaction (pcr) was applied in pools of simuliids fro ... | 2007 | 17426885 |
| an atypical microfilaria in blood samples from inhabitants of brazilian amazon. | an unidentified microfilaria sharing characteristics with mansonella ozzardi and onchocerca volvulus was detected in blood samples from seven human volunteers, inhabitants of a community in the border of amazonas and acre state. they were detected during epidemiological studies carried out in some communities along antimary, acre, and purus rivers in the brazilian amazon. the most striking difference was presented in the shape of the cephalic space from this microfilaria which was different from ... | 2008 | 18779979 |
| nested pcr to detect and distinguish the sympatric filarial species onchocerca volvulus, mansonella ozzardi and mansonella perstans in the amazon region. | we present filaria-nested polymerase chain reaction (pcr), which is based on amplification of first internal transcribed spacer rdna to distinguish three parasitic filarial species (onchocerca volvulus, mansonella ozzardi and mansonella perstans) that can be found in the amazon region. nested pcr-based identifications yielded the same results as those utilizing morphological characters. nested pcr is highly sensitive and specific and it detects low-level infections in both humans and vectors. no ... | 2010 | 20945000 |
| new records of mansonella ozzardi: a parasite that is spreading from the state of amazonas to previously uninfected areas of the state of acre in the purus river region. | mansonella ozzardi infections are common in the riverside communities along the solimões, negro and purus rivers in the state of amazonas (am). however, little is known about the presence of this parasite in communities located in regions bordering am and the state of acre. the prevalence rate of m. ozzardi infections was determined in blood samples from volunteers according to the knott method. a total of 355 volunteers from six riverine communities were enrolled in the study and 65 (18.3%) wer ... | 2014 | 24141966 |