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Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/8479

Title: Description of the occurrence of canine dirofilariasis in the state of Rio de Janeiro, Brazil
Authors: Labarthe, Norma
Almosny, Nádia
Guerrero, Jorge
Duque-Araújo, Ana Maria
Keywords: Dirofilaria immitis - dirofilariasis - heartworm - canine
Issue Date: 31-Dec-1997
Publisher: Fundação Oswaldo Cruz, Fiocruz
Citation: Memórias do Instituto Oswaldo Cruz (ISSN: 1678-8060) Vol 92 Num 1
Abstract: In order to evaluate the prevalence of canine heartworm in the State of Rio de Janeiro, a multicenter survey was carried out in two phases. The survey involved 1376 dogs from two cities: Rio de Janeiro and Niteroi, and its surroundings, including the eastern shore and mountain resorts, which were further divided into sections. In the first phase, 795 dog blood samples were examined by the modified Knott test for the detection of microfilariae. A total of 134 samples (16.85%) were microfilaremic: 8.61% from Rio de Janeiro, 21.76% from Niteroi and its surroundings, 33.33% from the eastern shore and 30.43% from the mountain resorts. In the second phase, 595 dog blood samples were examined first by the modified Knott test and the amicrofilaremic samples were subsequently examined by an immunoenzymatic test (ELISA) for antigen detection. In summary, 83 samples (13.95%) were microfilaremic and 44 (7.98%) of the amicrofilaremic samples were positive for heartworm antigen (occult infections). In Rio de Janeiro, 13.68% of the dogs were infected (i.e., antigen-and/or microfilaria-positive) and 8.51% of the dogs had microfilaremic infections. In comparison, Niteroi and its surroundings showed values of 24.46% and 17.30% and the eastern shore showed values of 52.46% and 31.15%. In contrast the mountain resorts showed 20% microfilaremic only.
URI: http://hdl.handle.net/1807/8479
Other Identifiers: http://www.bioline.org.br/abstract?id=oc97010
Rights: Copyright 1997 Fundacao Oswaldo Cruz
Appears in Collections:Bioline International Legacy Collection

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