Recent trends of cutaneous leishmaniasis in Alert Hospital, Addis Ababa.

BACKGROUND: Cutaneous leishmaniasis is endemic to many parts of the world and has re-emerged in a number of endemic countries in recent years. Environmental changes, immune status of the host and treatment failure are the three most important risk factors associated with the re-emerging and spread of Leishmaniasis. Cutaneous leishmaniasis (CL) ranges from localized, self-healing type to the disfiguring mucocutaneous and diffuse cutaneous type. OBJECTIVE: To access the trend of CL patient flow in ALERT Hospital, Addis Ababa, Ethiopia. METHODS: Patients' clinical and laboratory records were collected retrospectively for 1651 leishmaniasis suspected individuals from ALERT Hospital, from January 1, 2007 to December 30, 2010. RESULTS: From the suspected individuals, 234 cases were positive for Leishmania species with Giemsa stain and/or histopathology and confirmed for CL, of whom 30 (12.8%) were diagnosed in 2007, 29 (12.4%) in 2008, 75 (32.1%) in 2009, and 100 (42.7%) were in 2010. CONCLUSIONS AND RECOMMENDATIONS: The overall proportion of cases with leishmaniasis among the suspected cases was 234/1651 (14.2%). The distribution of CL reports was higher for patients coming from Addis Ababa surrounding areas and Oromia region, 96/234 (41.03%) and 71/234 (30.34%), respectively. In general, the trend of leishmaniasis in and around Addis Ababa seems to be increasing, which calls for further detailed epidemiological studies, including vector and reservoir host studies, to help in the prevention and control of the disease.

The pattern of bacterial isolates and drug sensitivities of infected ulcers in patients with leprosy in ALERT, Kuyera and Gambo hospitals, Ethiopia.

INTRODUCTION: Leprosy remains a public health problem, mainly in Africa, Asia and Latin America. Leprosy has many complications that include leprosy reactions, development of plantar and hand ulcerations, lagophthalomus and corneal anesthesia. OBJECTIVES: In Ethiopia there is scarce information on the pattern of bacterial isolates and drug sensitivities of infected ulcers in patients with leprosy. This study was undertaken to identify the bacteriology of infected ulcers and to determine their antimicrobial susceptibility pattern. STUDY DESIGN: A descriptive cross-sectional study was conducted in 245 informed and consented leprosy patients with infected ulcers visiting ALERT, Kuyera and Gambo hospitals during the period August 2006 to May 2007. MATERIAL AND METHODS: Wound aspirate specimens were collected from ulcers of each patient aseptically and inoculated into standard bacteriological media. Antimicrobial susceptibility testing was performed for all isolates according to the criteria of the National Committee for Clinical Laboratory Standards (NCCLS) by disk diffusion method. RESULTS: Of the 245 patients investigated, 64.1% were males and 35.9% females (P < 0.05). The average age of the patients was 50 years (age range 13 to 92 years). According to Ridley-Jopling classifications, patients presented with TT (3.7%), BT, (31.4%), BL (44.5%) and LL (15.9%) types of leprosy. Plantar and hand ulcers were observed in 92.2% and 7.8% of patients, respectively. According the patients, the commonest cause of their ulcers was 'spontaneous' (56.7%). There were 44% Gram-positive and 56% Gram negative bacteria (P > 0.05). Proteus spp. accounted for 29.5% of the total isolates followed by Staphylococcus spp. (28.8%), beta-hemolytic streptococci (15.1%) and different types of Gram-negative bacteria (26.2%). Multiple organisms (two or three) were isolated from 19.6% patients. Of the 212 wound samples cultured anaerobically, 5.2% were positive for anaerobic culture. In this study both Gram-positive and Gram negative bacteria showed decreased sensitivity to most antimicrobial agents tested. CONCLUSION: Proteus spp. was the most common isolate from infected ulcers. Ciprofloxacin, norfloxacin and gentamicin were the most effective drugs against the tested bacteria mainly for Gram-negative bacteria. This refers to the in vitro-sensitivity during the study period. The results of this study may help inform clinicians about the selection of an antibiotic in situations where use of an antibiotic may be indicated.

Estimates of Stillbirths, Neonatal Mortality, and Medically Vulnerable Live Births in Amhara, Ethiopia.

Importance: Data on birth outcomes and early mortality are scarce, especially in settings with limited resources. Total births, both stillbirths and live births, are often not counted, yet such data are critical to allocate resources and target interventions to improve survival. Objective: To estimate the prevalence of stillbirths, neonatal deaths, and medically vulnerable phenotypes, such as preterm births, small-for-gestational-age (SGA), large-for-gestational-age (LGA), and low-birth-weight (LBW) births, in a setting where these key indicators remain largely unknown. Design, Setting, and Participants: This prospective pregnancy cohort study of women and their newborns was conducted between December 12, 2018, and November 5, 2020. The study was conducted in North Shewa Zone, Amhara, Ethiopia. Data were analyzed from July 2021 to May 2022. Main Outcomes and Measures: Pregnancy status, gestational age, birth weight, and vital status were measured to estimate the prevalence of stillbirths, live births, and medically vulnerable live births (ie, preterm, SGA, LGA, and LBW births). For mortality outcomes, the prevalence of neonatal (overall, early, and late) and perinatal mortality were estimated. Results: Among the 2801 enrolled women, the median (IQR) age at conception was 26.5 (22.2-31.0) years, and the median (IQR) gestational age at enrollment was 24 (17-31) weeks. Of the 2628 women (93.8%) with outcome data, 101 pregnancies (3.8%) resulted in an early loss (<28 gestational weeks). Among the 2527 remaining pregnant women, there were 2518 births between 28 and less than 46 weeks' gestation; 2459 (97.7%; 95% CI, 97.0%-98.2%) were live births and 59 (2.3%; 95% CI, 1.8%-3.0%) were stillbirths. Many newborns (41.7%) were born preterm, SGA, LGA, or LBW. The estimated prevalence was 15.1% (95% CI, 13.7%-16.6%) for preterm births, 23.1% (95% CI, 21.3%-25.1%) for SGA births, 10.6% (95% CI, 9.3%-12.1%) for LGA births, and 9.4% (95% CI, 8.2%-10.8%) for LBW births. Among live births, the overall prevalence of neonatal mortality was 3.1% (95% CI, 2.5%-3.9%); mortality was higher among preterm births (7.2%; 95% CI, 4.9%-10.4%), LBW births (12.2%; 95% CI, 8.2%-17.7%), and SGA births (4.1%; 95% CI, 2.6%-6.5%). The prevalence of early neonatal mortality was almost twice as high as the prevalence of late neonatal mortality. The perinatal mortality prevalence was 4.3% (95% CI, 3.6%-5.2%), with a 1.2:1 ratio of stillbirths to first-week deaths. Conclusions and Relevance: These findings have important implications for newborn health and survival. For policy makers and programmers, accurate data on key indicators of neonatal health provide information for resource allocation and to evaluate progress. For researchers, the findings underlie the importance for further research to develop and deliver interventions that improve health outcomes.

Birhan maternal and child health cohort: a study protocol.

INTRODUCTION: Reliable estimates on maternal and child morbidity and mortality are essential for health programmes and policies. Data are needed in populations, which have the highest burden of disease but also have the least evidence and research, to design and evaluate health interventions to prevent illnesses and deaths that occur worldwide each year. METHODS AND ANALYSIS: The Birhan Maternal and Child Health cohort is an open prospective pregnancy and birth cohort nested within the Birhan Health and Demographic Surveillance System. An estimated 2500 pregnant women are enrolled each year and followed through pregnancy, birth and the postpartum period. Newborns are followed through 2 years of life to assess growth and development. Baseline medical data, signs and symptoms, laboratory test results, anthropometrics and pregnancy and birth outcomes (stillbirth, preterm birth, low birth weight) are collected from both home and health facility visits. We will calculate the period prevalence and incidence of primary morbidity and mortality outcomes. ETHICS AND DISSEMINATION: The cohort has received ethical approval. Findings will be disseminated at scientific conferences, peer-reviewed journals and to relevant stakeholders including the Ministry of Health.

Facial burning in women with leprosy, physiological or pathological?

INTRODUCTION: Eight peri-menopausal women, five with borderline lepromatous leprosy and three with borderline tuberculoid leprosy, self-referred complaining of 'burning of the face. Four were seen in 1993, three having been treated as 'menopausal'without betterment and four were seen in 1997. METHODS: Eight peri-menopausal women who self-referred because of facial burning', and seven women who self-referred for other problems had a careful review of clinical records and were assessed fully for leprosy including graded sensory skin testing of the face, and standard nerve function tests. RESULTS: On examination three in each group of four complaining of facial burning were found to have major loss of facial sensation and one had generalised neuritis without significant facial involvement. Treatment with antileprotics and steroids resulted in recovery of facial sensation, although one later became blind. Of the seven who self-referred without facial burning, five had no facial sensory loss and two had slight loss of facial sensation.

Growth and development of children of mothers with leprosy and healthy controls.

INTRODUCTION: In the pre-sulphone and early sulphone years children of leprous parents had been followed in a few prospective studies to observe the development of leprosy. No studies were made of the growth and development of these children. METHODS: A prospective, open-ended, cohort study began in 1975 with follow-up of both mothers and their children until 2003. 156 pregnancies were studied consisting of 36 non-leprous (NL), 25 tuberculoid and borderline tuberculoid leprosy (TT&BT) (released-from-treatment), 18 with TT&BT (active), 42 borderline lepromatous leprosy (BL) and 35 lepromatous leprosy (LL). RESULTS: Babies of mothers with leprosy had lower birth weight, smaller placentae, grew more slowly, had more infections and higher infant mortality than those of non-leprous mothers. The findings were most marked in babies of LL mothers. Growth in childhood was uneventful, infants of LL mothers catching up by age 3.6 years. Childhood infections were common in all groups but more serious for children of lepromatous mothers. The puberty skeletal growth spurt, and, for the girls, menarche was delayed for children studied compared with a new healthy control group, with catch-up by late teens. These findings were most marked in children of lepromatous, especially LL, mothers. CONCLUSION: Impaired growth in utero and infancy is probably due to immunological factors but we could find no explanation for the delayed growth in adolescent children of LL mothers.

Health profile of highland Ethiopians in a small town in the south-western part of the country.

BACKGROUND: In conjunction with an investigation of nerve function tests of highland Ethiopians in an area of low endemicity of leprosy for 25-30 years, a comprehensive health survey was performed. METHODS: We assessed 236 subjects, 118 females and 118 males, 177 students and 59 adults (Others) aged 10-75 years from Chencha woreda. We used a detailed medical, personal and social history, anthropomorphic measurements and complete physical examination. RESULTS: We identified six areas of medical concern: Intestinal parasite and diarrhoeal diseases affected 62%, despite treatment of all students and symptomatic adults the recurrence rate was high; skin diseases/conditions affected 88%; eye injections affected 26%; dental decay affected 33%; 20% had hypertension 14% requiring treatment; 11% gave a personal and/or family history of tuberculosis, 44% gave a history of BCG immunisation, while 34% had BCG scars, the lowest percentage (11%) being in students from Daramallo woreda. RECOMMENDATIONS: Supplies of clean water, effective disposal of human excreta and control of flies would greatly reduce intestinal, skin and eye infections. Regular tooth cleaning and possibly fluoridation of drinking water should improve dental health, with diet and exercise for young hypertensives. BCG immunisation in Chencha and Daramallo woredas (inaccessible areas) needs urgent attention.

Thermal threshold tester, a useful tool for detection of very early nerve damage--determination of normal values in a healthy population unexposed to Mycobacterium leprae and its application in the A9 study.

INTRODUCTION: In Ethiopia, a large percentage of leprosy patients present with established nerve damage. Present techniques for measuring nerve function impairment show no abnormality until 30% of nerve axons are destroyed. Nerve damage in leprosy occurs first in small diameter unmyelinated fibres, then in small myelinated fibres, and much later in large myelinated fibres. The Thermal Threshold Tester (TTT) was used to measure function in nerves carrying heat sensation (unmyelinated C fibres) and cold sensation (thinly myelinated Adelta fibres). PATIENTS: A school and community health survey, assessed 234 students and adults aged 10-75 years from Chencha Woreda, an area with low endemicity of leprosy. A group of students in Addis Ababa, exposed to leprosy, were also studied. RESULTS: The upper limits of normal were: wrist hot threshold (HT): 0.17 degrees C, wrist cold threshold (CT): 0.19 degrees C, foot HT: 0.17 degrees C and foot CT: 0.20 degrees C. Both the leprosy group and also controls in Addis Ababa showed significantly increased TTT values. CONCLUSION: The TTT detects nerve damage before clinical neuritis occurs and is a valuable tool for early diagnosis of leprosy or detecting clinical relapse of treated patients and for sequential and quantitative monitoring of small diameter nerve function in other neuropathies.

Peripheral nerves and nerve function in highland Ethiopians.

INTRODUCTION: In Ethiopia, where leprosy has been one of the commonest causes of peripheral nerve enlargement and dysfunction, nerve functions are assessed by a battery of "physical" tests. Voluntary Muscle Test (VMT) and Graded Sensory Skin Test (STG) are standard tests used for persons with leprosy. Normal values for nerve function tests (NFT) in Highland Ethiopians have not previously been determined, but have been taken from standard textbooks. In this study, normal values for NFT were determined by VMT, STG, 2-Point Discrimination Tests both static and moving, and Thermal Threshold Test. Physiological enlargement of right ulnar and radial-cutaneous nerves has been recognised by some leprologists, but we were unable to find written records in the available medical literature. MATERIALS: We assessed 236 students and adults aged 10-75 years from Chencha Woreda, an area with low endemicity of leprosy for 25-30 years. Two affected by leprosy were excluded from the analysis. RESULTS: NFT thresholds were affected variously by age, exercise and skin factors, domicile and exposure to organo-phosphates. Nerve size was affected by age, gender, exercise, skin fold thickness, body mass index. Exercise related physiological nerve enlargement has been documented. CONCLUSION: These data provide a usefull baseline for investigation of peripheral nerve function in highland Ethiopians.

Isolation of Leishmania tropica from an Ethiopian cutaneous leishmaniasis patient.

Cutaneous leishmaniasis (CL) in the Old World is caused mainly by three species of Leishmania: L. major, L. tropica and L. aethiopica, and sporadically by L. infantum and L. donovani. In Ethiopia, zoonotic cutaneous leishmaniasis, caused by L. aethiopica, is a major public health problem affecting thousands of people in the highlands. By contrast, little is known about the existence and epidemiology of CL due to L. tropica. In this report, we provide the first well-documented case of CL in Ethiopia caused by L. tropica. The patient acquired the infection in Awash valley of the Ethiopian Rift Valley (northeastern Ethiopia), where Phlebotomus sergenti and P. saevus have previously been found infected by L. tropica. Using the isoenzyme electrophoresis technique, the isolate was found to belong to a variant of L. tropica zymodeme MON-71, one of the new zymodemes found in Ethiopia from P. sergenti in the same region so far. The epidemiological implications of the finding are discussed.

Leishmania aethiopica: strain identification and characterization of superoxide dismutase-B genes.

This study was performed to characterize the genes that code for superoxide dismutase (SOD) in Leishmania aethiopica. It involved three main steps: specimen collection and parasite isolation, species identification, and molecular characterization of the SOD genes. Out of 20 skin slit specimens cultured and processed from suspected cutaneous leishmaniasis patients enrolled in the study, five (25%) were found to be positive for motile promastigotes. Isoenzyme electrophoresis and PCR-RFLP results confirmed that the isolates were L. aethiopica. Superoxide dismutase-B (SODB) genes were identified from L. aethiopica for the first time. Iron superoxide dismutase-B genes amplified from promastigotes of L. aethiopica (LaeFeSODB) were similar in size to the SODB genes of other Leishmania species. Nucleotide sequences of LaeFeSODB1 showed 95.4, 93.5, and 97.3% identity with L. donovani SODB1 (LdFeSODB1) L. major SODB1 (LmFeSODB1) and L. tropica SODB1 (LtrFeSODB1), respectively. Similarly, LaeFeSODB2 showed 95.9 and 94.1 and 97.6% identity with LdFeSODB2 and LmFeSODB2 and LtrFeSODB2, respectively. On the other hand, predicted amino acid sequence comparison indicated that LaeFeSODB1 had 91.3, 89.8, and 93.9% identity with LdFeSODB1, LmFeSODB1, and LtrFeSODB1, respectively. The difference in nucleic acid sequence of LaeFeSODB from that of LmFeSODB and LtrFeSODB can be utilized to develop specific molecular methods that help differentiate these species in places where there is an overlap in the distribution of these species. In addition, the data provide information about the situation of L. aethiopica with respect to SODB genes.