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Leishmaniasis

Leishmaniasis

Leishmaniasis is a protozoal disease caused by species of the genus Leishmania and transmitted through the bite of infected female sandflies. The parasite exists in two principal morphological forms during its life cycle. A sandfly acquires intracellular amastigotes from an infected reservoir host, such as a dog. Within the sandfly, these forms differentiate into motile, flagellated promastigotes. During a subsequent blood meal, promastigotes are injected into the human host, where they...

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Updated: Jun 2, 2026

Cutaneous Leishmaniasis in the Dorsal Skin of Hamsters: a Useful Model for the Screening of Antileishmanial Drugs

Cutaneous Leishmaniasis in the Dorsal Skin of Hamsters: a Useful Model for the Screening of Antileishmanial Drugs

Published on: April 21, 2012

Latency time in cutaneous leishmaniasis.

S Veraldi¹, R Gianotti, F Sala

¹Department of Anesthesiology, Intensive Care and Dermatological Sciences, University of Milan, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy. stefano.veraldi@unimi.it

Giornale Italiano Di Dermatologia E Venereologia : Organo Ufficiale, Societa Italiana Di Dermatologia E Sifilografia

|April 21, 2011

Summary

This summary is machine-generated.

Cutaneous leishmaniasis latency periods are rarely studied. This study highlights three Sicily-acquired cases with unusually long incubation times of 11–16 months, suggesting prolonged latency is possible.

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Area of Science:

Medical Parasitology
Infectious Diseases Epidemiology

Background:

Cutaneous leishmaniasis (CL) is a parasitic disease transmitted by sandflies.
The incubation period, or latency, of CL is not well-documented.
Understanding CL transmission dynamics is crucial for public health.

Observation:

Three patients in Sicily presented with CL after a prolonged latency period.
Incubation times ranged from 11 to 16 months.
Diagnosis was confirmed via histopathology and polymerase chain reaction (PCR), identifying Leishmania infantum and Leishmania canis.

Findings:

This study observed exceptionally long latency periods in CL cases acquired in Sicily.
The extended latency did not correlate with specific Leishmania species or patient immune status.
All patients had normal immunological test results.

Implications:

The findings suggest that CL in Sicily may exhibit significantly longer incubation periods than previously recognized.
Further research is needed to elucidate the factors influencing prolonged CL latency.
This information is vital for accurate diagnosis and epidemiological surveillance of CL.