The Panamanian Ministry of Health, through the Interamerican Development Ba
nk, contracted the Gorgas Memorial Laboratory to conduct epidemiologic stud
ies on leishmaniasis and malaria in eastern Panama from July 1984 through J
une 1985. Preliminary results of the biomedical and entomologic teams inves
tigating the epidemiology of cutaneous leishmaniasis in the eastern part of
the country are presented in this short report. The principal findings of
the study revealed 1) a large disparity in the incidence and prevalence of
the disease among the five communities investigated; 2) the appearance of s
elf-cures without the benefit of effective treatment; 3) a relatively high
percentage of subclinical cases; and 4) determination of the sandfly vector
species for each community. Also reported here is a case of a double infec
tion with two distinct species of Leishmania, L. mexicana and L. amazonensi
s in a single individual.