Acta Tropica 127 (2013) 1–5
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Acta Tropica
journal h om epa ge: www.elsevier.com/locate/actatropica
Epidemiologic study and molecular detection of Leishmania and sand
fly species responsible of cutaneous leishmaniasis in Foum Jamâa
(Azilal, Atlas of Morocco)
Hassan Arroub
a
, Salsabil Hamdi
b
, Malika Ajaoud
b
, Khalid Habbari
a
, Meryem Lemrani
b,∗
a
Laboratory of Management and Valorization of Naturals Resources, FST, Sultan Moulay, Slimane University, M’GHILA Route de Fes,
B.P. 523, Beni Mellal 23000, Morocco
b
Laboratoire de Parasitologie et Maladies Vectorielles, Institut Pasteur du Maroc, Casablanca, Morocco
a r t i c l e i n f o
Article history:
Received 13 December 2012
Received in revised form 25 February 2013
Accepted 10 March 2013
Available online 21 March 2013
Keywords:
Cutaneous leishmaniasis
ITS1-PCR
Leishmania tropica
Phlebotomus sergenti
Morocco
a b s t r a c t
The region of Foum Jamâa (province of Azilal) has become endemic for cutaneous leishmaniasis (CL)
since 2006. The objective of this study was to investigate molecular identification of the etiological agent
of CL in this region; we also carried out an entomological survey of Phlebotomine sand flies (Diptera:
Psychodidae) in this focus to study the sand fly fauna, species composition, and the monthly prevalence
of sand flies during 1 year. In the period between 2009 and 2010, skin scrapings spotted on glass slides
were collected from 119 patients, aged from 9 months to 70 years old, who came from 43 localities
distributed in 3 sectors in Foum Jamâa (FJ). The ITS1 PCR-RFLP was used to identify the Leishmania parasite
responsible for the recent cases of CL in FJ. Our results revealed that the disease is caused by L. tropica. No
significant association was observed between gender and the rate of CL in presenting patients, while the
highest rate of positive lesions was found in the age group of 9 years old or under (86.67%). In this study,
we found also that L. tropica infection mostly caused single lesions (67.90%) that were located in the
face (96.30%). Morphological identification was performed on a total of 1152 sand flies (23% females and
77% males) collected by sticky paper traps. 57% of the total collected flies were identified as Phlebotomus
(Paraphlebotomus) sergenti (Parrot).
© 2013 Elsevier B.V. All rights reserved.
1. Introduction
In Morocco, three species of Leishmania are endemic, causing
human cutaneous leishmaniasis (CL). L. major is responsible of
zoonotic CL and is localized in areas south of the Atlas Mountains
(Rioux et al., 1986) where regular epidemics, with more than 2000
cases are reported (Ministry of Health, 2008). In the North of the
country, some sporadic cases of CL due to L. infantum were observed
(Lemrani et al., 1999; Rhajaoui, 2009). L. tropica has the largest
geographic distribution and is considered a major public health
threat (Ministry of Health, 2008); this form was reported for the
first time in 1989 (Marty et al., 1989), since this first case a large eco-
epidemiological study led to the detection of a large focus in central
and southern areas of the country. Recently, Morocco is known for
the emergence of several new foci in the north Guessous-Idrissi
(Guessous-Idrissi et al., 1997; Rhajaoui et al., 2004, 2007) and L.
∗
Corresponding author at: Institut Pasteur du Maroc, 1 Place Louis Pasteur
Casablanca Maroc, Morocco. Tel.: +212 661 46 48 18; fax: +212 522 26 09 57.
E-mail addresses: meryem.lemrani@pasteur.ma, meryem.lemrani@gmail.com
(M. Lemrani).
tropica has been found in some regions previously known for trans-
mission of L. major (Rhajaoui, 2009). L. tropica is considered to be
purely anthroponotic, however, more recently it has become clear
that in some cases L. tropica could be zoonotic (Guessous-Idrissi
et al., 1997).
In the province of Azilal, FJ region has become an epidemic focal
point for CL.
It seems obvious that FJ was free from CL before 1990; the first
cases recorded by the provincial delegation of health go back to
1986 and 1987 in Tanant, at 16 km from FJ. Early in 2000, sev-
eral provincial centers declared some scattered cases in FJ. During
the period 2006–2009, we registered about 500 cases of CL in this
region (Arroub et al., 2012), the efforts done by the Ministry of
Health between 2006 and 2009 have stabilized the number of cases
in the region, nevertheless, the disease is still persistent and the
number of cases can increase at any time.
In our previous work focused on the eco-epidemiological and
socioeconomic study, we have described CL in FJ as a rural domes-
tic form, characterized by affecting the whole family nucleus, due
to the fact that dwellings are located near the natural focus of trans-
mission; thus propitiating the vector’s arrival in the house (Arroub
et al., 2012). Based on clinical symptoms, we suggested that the
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http://dx.doi.org/10.1016/j.actatropica.2013.03.005