Cas clinique de leptospirose révélée par des douleurs thoraciques et un ictere cholestatique chez un ouvrier de forage au Bénin

La leptospirose est une anthropozoonose à répartition mondiale, caractérisée par une forte incidence en milieu tropical et un grand polymorphisme clinique. La maladie est reconnue comme un problème de santé publique émergent aussi bien dans les pays en voie de développement que dans les pays développés. La contamination se fait soit directement par exposition à l'urine d'animaux infestés, soit indirectement dans l'eau souillée par les urines. La gravité de l'affection tient aux atteintes hépatiques et rénales. Aucune donnée publiée n'existe sur cette affection au Bénin. Nous rapportons un cas de leptospirose révélée à Cotonou par des douleurs thoraciques et un ictère cholestatique chez un ouvrier de forage

Leptospirose, une étiologie de fièvre prolongée peu diagnostiquée. A propos d'une observation

Les conditions bio-climatiques prédisposent à la transmission de la leptospirose au Gabon. Paradoxalement, cette affection est rarement voire peu diagnostiquée par les praticiens de ce pays. Nous rapportons une observation de leptospirose révélée par une fièvre au long cours

Seroprevalence of Leptospira Check for this Species in other Resources Infection in Bats Roosting in Human Settlements in Morogoro Municipality in Tanzania

Leptospirosis is a neglected emerging infectious disease with high burden in Africa. Major reservoirs of leptospirosis are rodents and other small mammals. Studies of leptospirosis in bats and the extent to which they contribute to its transmission to humans and domestic animals in Tanzania are lacking. The objective of this study was to determine the prevalence of leptospirosis and local Leptospira check for this species in other resources serovars in bat colonies found around human settlements in ; Tanzania. In this study; mist nets were used to capture bats at Sokoine University of Agriculture main campus; whereas bats roosting on trees at Nunge A; Nunge B and Mwere primary school were captured manually. Leptospirosis was determined using the gold standard microscopic agglutination test for determination of Leptospira antibodies. Six live Leptospira serovars including local Leptospira serovar Sokoine; Kenya and Lora reported in rodents and domestic animals in Tanzania; and reference serovars Hebdomadis; Canicola and Pomona were used in the study. Leptospirosis prevalence was high in bats (19.4) and higher within colonies (27.3). Leptospira serovar Sokoine was more prevalent (19.4) compared to serovars Kenya (2.8) and Lora (2.8). Serovars Pomona; Canicola and Hebdomadis were not detected in bats. In conclusion; bats are potential reservoir and transmitter of Leptospira serovar Sokoine; hence should be prevented to access houses and roosting in human settlements to avoid public health risks. Routine diagnosis of human leptospirosis is needed in Tanzania as evidence show a high prevalence of Leptospira in reservoir hosts interacting with humans

Sampling mosquitoes with CDC light trap in rice field and plantation communities in Ogun State, Nigeria

Mosquito species were sampled to determine the mosquito composition and abundance in rice field and plantation communities in Ogun State Nigeria. Mosquitoes were caught once weekly from four selected houses in each of the two communities by means of CDC light traps. A total of 47,501 mosquitoes representing fifteen species were caught in the two communities of which the rice field community accounted for 63.8% of the total catch. Mansonia africana constituted the most important biting mosquito in the two communities representing 62.1% and 39.1% in rice field and plantation communities, respectively. Other species in decreasing order of abundance were M. uniformis, Anopheles gambiae, Coquilletidia fuscopennata, An. moucheti, An. funestus, An. nili, Culex quinquefasciatus, Eretmapodites chrysogaster, Coq.metallica, Cx annulioris, An. rhodesiensis, Aedes aegypti, An. squamosus and An. maculipennis. Seven mosquito species were caught throughout the year but mostly in the months of May to October. Abundance varied significantly between the study sites and between the months (F,1.11 =241.9 P<0.05) Most of the mosquitoes collected were unfed and nulliparous (87.1%). In spite of the high proportion of M. africana, its parous rate was low 0.53 and 0.59 in rice fileld and plantation, respectively. The highest parity was seen in Ae. aegypti (0.81-0.86) and An. gambiae, (0.69-0.68)

Recherche de reservoirs de la leptospirose a Madagascar par la technique d'amplification genique

"Use of the polymerase chain reaction technique in detection of Leptospirosis in Madagascar"" : A polymerase chain reaction (PCR) technique was used for detection of the Leptospira interrogans rrs gene in kidney tissue from 115 rats; 50 zebu cattles and 13 pigs in an attempt to identify a possible animal reservoir of leptospirosis in Madagascar. In addition; serological testing of 105 individuals in close contact with animals was carried out. The PCR analysis was negative for all the samples tested and only one person was found seropositive at a low titer. The findings suggest that leptospirosis; if prevalent in Madagascar; is likely rare."

Human leptospirosis in 1994 in Seychelles

Leptospirosis remains a frequent cause of hospitalisation in Seychelles. This study reports epidemiologic data available in 1994 in Seychelles derived from a hospital-based register of medical diseases. Among 2;992 admissions to all medical departments of the country; there were 33 admissions for leptospirosis (1.1 per cent of all admissions). Admissions rates were similar within all geographical areas; higher in men compared to women; and during the rainy period. Leptospirosis was diagnosed in all age groups except for the youngest and the oldest. L. interrogans icterohemorrhagia was the most frequent serogroup. These findings are very similar to those reported recently for the year 1993 in the journal. Two patients died during their hospital stay; the cause of death was pulmonary hemorrhage. Case fatality dropped from 16 per cent (1989-90) to 6 per cent and this can be connected to the opening of a hemodialysis unit in 1992

Leptospirosis : a mimic in Seychelles

Leptospirosis is common and severe in Seychelles. During the year 1995; all patients with leptospiral infection admitted to Seychelles hospitals and diagnosed by positive indirect hemagglutination assay or by typical clinical presentation; for 3 cases who died shortly after admission; were registered. Among 45 diagnosed cases; 4 presented a distinctive diagnostic challenge: hemorrhagic pneumonitis; acute renal failure with acute neuropathy of lower limbs; aseptic meningitis during leptospiremic phase and Jarish-Herxheimer reaction. In areas where leptospirosis is endemic; this disease should be systematically considered in patients with a febrile illness and multisystem involvement

Human leptospirosis in 1993 in Seychelles

Leptospirosis is a frequent cause of hospitalization in Seychelles. This study examines epidemiologic data available in 1993 in Seychelles derived from a hospitalization register of medical diseases. Among 2244 admissions to all medical departments of the country; there were 32 admissions for leptospirosis (1.4 per cent of all admissions). Admissions rates were similar within all geographical areas; higher in men compared to women ; in younger adults; and during the rainy season. L. interrogans ictorohaemorrhagia was the most frequent serogroup. 9 per cent of admissions resulted in death during the hospital stay. Further studies should be carried out in Seychelles to clarify the epidemiology of the disease and identify approriate preventive measures