[Triatoma infestans in area under entomological surveillance for Chagas' disease in São Paulo State, Brazil]. / Triatoma infestans em área sob vigilância entomológica para doença de Chagas, Estado de São Paulo, Brasil.

In response to notification of the capture of a winged triatomine bug by local inhabitants, an epidemiological investigation was investigated in the rural area of the Municipality of Paulínia, São Paulo State (Brazil). This led to the collection of 109 specimens of Triatoma infestans from peridomiciliary breeding sites. Local conditions favored colonization by triatomine bugs: many abandoned outbuildings were inhabited by pigeons and sparrows, which meant abundant feed for these bugs. Thus, surveillance is mandatory as long as conditions for triatomine breeding persist. Nevertheless, entomological and serological indicators ruled out immediate concern over vectorial transmission of Chagas' disease in this municipality. All domiciliary units of the region were sprayed with residual-effect insecticides and the triatomine breeding sites were destroyed by the use of mechanical control of bird nests. The importance of reporting the occurrence of triatomine bugs, particularly Triatoma infestans, in this region, is emphasized.

[Sandflies (Diptera, Psychodidae) from the transmission area for American cutaneous leishmaniasis in the town of Itupeva, the southeastern region of São Paulo state, Brazil]. / Flebotomíneos (Diptera, Psychodidae) de área de transmissão de leishmaniose tegumentar americana, no município de Itupeva, região sudeste do Estado de São Paulo, Brasil.

The present study was effected aiming the verification of the seasonal, spatial and hourly of the phlebotominic species found in the county of Itupeva. Captures were performed fortnightly and 864 sand flies were collected between april/94 and march/95. 81.3% of the captured specimens belonged to 4 species: L. migonei (32.4%), L. whitmani (26.0%), L. intermedia (12.0%) e L. fischeri (10.9%). Such species showed larger densities during the cold and dry season of the year (from april to september/94) and were more active between the second and the fifth hour after twilight. L. migonei predominated almost in all the investigated surroundings being followed by L. whitmani and L. longipalpis in the domestic environments. In conclusion it is thought that in conjunction with L. intermedia, a suspect vector in the State of São Paulo, L. migonei and L. whitmani may have an important role in the transmission of cutaneous leishmaniasis in the area under study.

Leishmaniose tegumentar americana na regiäo nordeste do Estado de Säo Paulo - Brasil / American tegumentary leishmaniasis in the norheastern state of Säo Paulo - Brasil

Os autores descrevem um surto de leishmaniose tegumentar americana (LTA) instalado na regiao nordeste do Estado de Sao Paulo em 1992. Após a notificaçao de doze casos humanos em uma área rural do município de Itupeva, foi realizado um inquérito epidemiológico, destacando-se 34 por cento de positividade da populaçao à Reaçao Intradérmica de Montenegro. Constatou-se uma grande diversidade da fauna flebotomínica local, com predominância de L. migonei, L. intermedia e L. whitmani, tanto no domicílio, quanto na margem da mata. Ressalta-se a presença na margem da mata de L. longipalpis.

[American tegumentary leishmaniasis in the northeastern state of São Paulo-Brazil]. / Leishmaniose tegumentar americana na região nordeste do estado de São Paulo-Brasil.

An outbreak of American Cutaneous Leishmaniasis (ACL) occurring in the Northeast region of São Paulo state in 1992 is described. After the notification of the 12 human cases, a skin test survey of the local population was carried out in a rural area of the Itupeva municipality. The survey consisted of 144 interviews and 100 clinical examinations using the Montenegro skin test (MST). A prevalence of 34% positive MST was encountered. The predominant species of sandflies captured both in domestic and nearby areas of secondary vegetation were L. intermedia, L. whitmani and L. migonei. The presence of L. longipalpis in the nearby area of secondary vegetation was also registered.