A Two Years Study on Vectors of Cutaneous Leishmaniasis. Evidence for Sylvatic Transmission Cycle in the State of Campeche, Mexico
Vectors of cutaneous leishmaniasis in the State of Campeche were studied in relation to the transmission cycle of Leishmania (Le.) mexicana. To determine how transmission of leishmaniasis occurs, we collected phlebotomine sand flies for two years. In the first year (October 1990 to November 1991) th...
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| Published in: | Memórias do Instituto Oswaldo Cruz Vol. 91; no. 5; pp. 555 - 560 |
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| Main Authors: | , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
Brazil
Fundação Oswaldo Cruz, Fiocruz
01-10-1996
Instituto Oswaldo Cruz, Ministério da Saúde Fundação Oswaldo Cruz (FIOCRUZ) |
| Subjects: | |
| Online Access: | Get full text |
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| Summary: | Vectors of cutaneous leishmaniasis in the State of Campeche were
studied in relation to the transmission cycle of Leishmania (Le.)
mexicana. To determine how transmission of leishmaniasis occurs, we
collected phlebotomine sand flies for two years. In the first year
(October 1990 to November 1991) the collections were made with CDC
light traps, Shannon traps and direct captures at natural shelters
around the village ({200 m) of La Libertad. In the second year
(February 1993 to January 1994) the catches were performed at 8 km
southeast of La Libertad in the forest. Female sand flies were examined
for Leishmania. During the first year, 347 sand flies of nine species
were collected, most of which were Lutzomyia deleoni (61.3%). When all
nine species were considered, more females than males were captured.
Low densities of anthropophillic species of sand flies around the
village indicated that sylvatic transmission was taking place. For the
second year, 1484 sand flies of 16 species were caught. The most common
were L. olmeca olmeca (21.7%), L. cruciata (19.2%) and L. ovallesi
(14.1%). Similarly, more females were caught than males. Thirty-five
females of five species were found infected with flagellates believed
to be Leishmania sp. The highest infection rate was found in L. olmeca
olmeca (7.1%) followed by L. cruciata (4.5%) and L. ovallesi (1.1%).
These data plus other evidence on the epidemiology of human cases and
results from reservoir studies are discussed in relation to the
sylvatic transmission cycle. |
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| Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 ObjectType-Article-1 ObjectType-Feature-2 |
| ISSN: | 1678-8060 0074-0276 0074-0276 1678-8060 |
| DOI: | 10.1590/S0074-02761996000500004 |