Disseminated leishmaniasis in a four-year-old child in Yaoundé, Cameroon.

Leishmaniasis is a disease caused by a protozoan parasite of the genus leishmania with worldwide distribution and is transmitted to man by phlebotomine sand flies. The clinical presentation could range from a single cutaneous ulcer to disseminated leishmaniasis. We report the case of a four-year-old boy admitted to our hospital with ulcers, wasting, progressively distending abdomen, and fatigue evolving for about two months. On admission, he was febrile and pale, with diffuse oozing wet ulcers on the limbs and face, hepatosplenomegaly, and enlarged inguinal lymph nodes. The complete blood count revealed pancytopenia with low reticulocyte count, and serum protein electrophoresis showed hypoalbuminemia and hypergammaglobulinemia. Skin biopsy revealed amastigotes in phagocytic cells. The above findings suggested cutaneous and visceral localization of the leishmania; however, the parents absconded with the boy just when treatment was instituted, believing that the child was bewitched. The outcome is expected to be fatal visceral involvement.

[Anhidrotic ectodermal dysplasia: report of one case at Mother and Child Center of Chantal Biya Foundation, Yaounde, Cameroon]. / La dysplasie ectodermique anhydrotique : à propos d'un cas au Centre Mère et Enfant de la Fondation Chantal Biya, Yaoundé, Cameroun.

Ectodermal dysplasia are rare genetic diseases characterized by the absence or dysplasia of some tissues of ectodermal origin. We present a case of a young boy seen at the age of seven and a half years for late eruption of teeth, morphologic abnormalities of the teeth and a feeling of exaggerated heat. The diagnosis of anhidrotic ectodermal dysplasia was discussed. The absence of sweat glands on the skin biopsy slides was in favor of the diagnosis. Dental prostheses were put in place which the aim of permitting the child to eat normally and have a better self image.

Artesunate-mefloquine combination therapy in acute Plasmodium falciparum malaria in young children: a field study regarding neurological and neuropsychiatric safety.

BACKGROUND: Mefloquine-artesunate combination therapy for uncomplicated falciparum malaria is one of the treatments used in African children. Data concerning neurological safety in adults and children treated with mefloquine and artesunate combination therapy is well documented in Asia. Safety data for neurological and neuropsychiatric side effects of mefloquine and artesunate combination therapy in African children are scarce, although WHO recommends this therapy in Africa. METHODS: A phase IV, open label, single arm study was conducted among African children between 10 and 20 kg with acute uncomplicated falciparum malaria. They were treated over three consecutive days with a paediatric fixed-dose combination of artesunate (50 mg/d) and mefloquine (125 mg/d). Parasitological, clinical and neurological examinations and standardized questions about neuropsychiatric symptoms were carried out on days 0, 4, 7, 28 and 63. The primary objective was to assess the neurological and neuropsychiatric safety of artesunate-mefloquine combination therapy in young children. RESULTS: From December 2007 to March 2009, 220 children with uncomplicated Plasmodium falciparum malaria were treated with artesunate and mefloquine. 213 children were analysed according to study protocol. 50 neurological and neuropsychiatric adverse events occurred in 28 patients. Eleven drug-related neurological and neuropsychiatric adverse events occurred in eight patients. Sleeping disorders were present in 2.3%, neurological disorders in 1.4%, neuropsychiatric disorders in 1% and eating disorders in 0.5% of the patients. Adverse events were of mild to moderate intensity and resolved spontaneously. CONCLUSION: African children showed a low percentage of self-limited neurological and neuropsychiatric adverse events, confirming studies on neurological safety in Asian children treated with artesunate and mefloquine. Sleeping disorders were most frequently observed.

Tolerability and efficacy of a pediatric granule formulation of artesunate-mefloquine in young children from Cameroon with uncomplicated falciparum malaria.

A fixed-dose pediatric formulation of artesunate and mefloquine (Artequin Pediatric) has been developed. In this open, non-comparative study in Cameroonian children with uncomplicated falciparum malaria, the safety and efficacy of this formulation was tested, with a particular emphasis on the risk of neuropsychiatric adverse events (AEs). In total, 220 subjects, weighing between 10 and 20 kg, were enrolled; 213 qualified for analysis. Artesunate-mefloquine was given once daily for 3 days. Overall, 13.1% of patients reported mild to moderate neuropsychiatric AEs (elicited through a structured questionnaire or reported spontaneously) out of which 3.8% (mainly insomnia) were considered drug-related. Other drug-related AEs were infrequent (< 3%). Polymerase chain reaction-corrected cure rate (adequate clinical and parasitological response) determined by survival analysis at 28 and 63 days was 96.6%. New infections were observed in 11.2% of evaluable patients at 63 days. The new formulation was well tolerated and efficacious in the population investigated.

[Human African trypanosomiasis: description of two pediatric cases in Yaoundé, Cameroon]. / Trypanosomiase humaine africaine: à propos de deux cas pédiatriques à Yaoundé, Cameroun.

During the first decades of the 20th century, about 45% of deaths in Cameroon were believed to be due to human African trypanosomiasis. Thanks to the screening and treatment campaigns implemented between 1926-1932, a considerable regression of the disease was achieved and, by the 1950s, only a few well-known and delimited foci remained. Today, human African trypanosomiasis is an extremely rare diagnosis, especially in children. The purpose of this report is to describe two cases of neuromeningeal human African trypanosomiasis that were discovered coincidentally in two children, ages 12 and 2 years. The children were from two villages in the center of Cameroon that is not considered as a known endemic focus. These two cases raise difficult questions about the possibility of latent endemic foci of human African trypanosomiasis and of animal-to-human transmission. The outcome was favorable in the first case and fatal in the second.

Seasonal pattern of hospitalization from acute respiratory infections in Yaoundé, Cameroon.

Acute respiratory infections (ARIs) are among the leading causes of childhood morbidity and mortality in Africa. The effects of climatic factors on occurrence of ARIs in the tropics are not clear. During the years 2006-07, we reviewed the clinical registers of the Chantal Biya Foundation (CBF), Yaoundé, Cameroon, paediatric hospital to investigate the association between climatic factors and ARIs in children. Our findings show that rain, high relative humidity and low temperatures are directly associated with an increase in the frequency of hospitalization from ARIs. Given the high frequency of hospitalization from ARIs we suggest that influenza vaccination campaigns should be implemented taking into account the seasonality in Cameroon.

Management of neural tube defects in a Sub-Saharan African country: the situation in Yaounde, Cameroon.

BACKGROUND: Neural tube defect is a serious disabling but preventable congenital malformation with an incidence of 1.99 per 1000 births in Yaounde [A.K. Njamnshi, V. d e P. Djientcheu, A. Lekoubou, M. Guemse, M.T. Obama, R. Mbu, S. Takongmo, I. Kago. Neural tube defects are rare among black Americans but not in Sub-Saharan black Africans: The case of Yaounde-Cameroon. Journal of the Neurological Sciences 2008; 270: 13-17]. The management requires highly qualified personnel and a significant social cost. The aim of this study was to evaluate the management of neural tube defect in a resource-limited developing Sub-Saharan nation like Cameroon. METHODS: We reviewed all patients with neural tube defects admitted in the neonatology unit of the Mother and Child Center (Chantal Biya Foundation Yaounde) between January 1st 2000 and December 31st 2006. RESULTS: Sixty-nine (69) patients were enrolled. There was a male predominance (69.57%) in the sample. Myelomeningomecele represented 68.11% of cases, followed by encephalocele (27.54%) and meningocele (4.35%). Antenatal ultrasound examinations were done in 27 cases (32.8%). The prenatal diagnosis was made only in 8 cases. No medical abortion was performed in any of these cases. Medical abortion is illegal in Cameroon (except in certain specific situations) as well as other Sub-Saharan African countries. Hydrocephalus was diagnosed in 40.02% of cases. As most of the patients (62.32%) could not afford modern treatment, only 26.09% of them were operated at birth. The rest sought traditional and other forms of treatment, due to poverty or cultural beliefs. Eight patients (11.59%) died before surgery. Surgery consisted of local closure alone (40%) or local closure associated to CSF shunting (60%). The complications were wound dehiscence (13.69%), shunt infection (1.37%), meningitis (1.37%) and iatrogenic pulmonary oedema (1.37%). CONCLUSION: Neural tube defects are the most frequent and disabling malformations in neonates in the Sub-Saharan African paediatric environment. Prenatal management and outcome at birth are limited by poverty and cultural beliefs. Prevention is possible and may be better than palliative care in developing countries.

A systematic review of existing national priorities for child health research in sub-Saharan Africa.

BACKGROUND: We systematically reviewed existing national child health research priorities in Sub-Saharan Africa, and the processes used to determine them. METHODS: Collaborators from a purposive sample of 20 WHO-AFRO Region countries, assisted by key informants from a range of governmental, non-governmental, research and funding organisations and universities, identified and located potentially eligible prioritisation documents. Included documents were those published between 1990 and 2002 from national or nationally accredited institutions describing national health research priorities for child health, alone or as part of a broader report in which children were a clearly identifiable group. Laboratory, clinical, public health and policy research were included. Two reviewers independently assessed eligibility for inclusion and extracted data. RESULTS: Eight of 33 potentially eligible reports were included. Five reports focused on limited areas of child health. The remaining three included child-specific categories in reports of general research priorities, with two such child-specific categories limited to reproductive health. In a secondary analysis of Essential National Health Research reports that included children, though not necessarily as an identifiable group, the reporting of priorities varied markedly in format and numbers of priorities listed, despite a standard recommended approach. Comparison and synthesis of reported priorities was not possible. CONCLUSION: Few systematically developed national research priorities for child health exist in sub-Saharan Africa. Children's interests may be distorted in prioritisation processes that combine all age groups. Future development of priorities requires a common reporting framework and specific consideration of childhood priorities.

Assessment of gestational age in the Cameroonian newborn infant: a comparison of four scoring methods.

A clinical assessment of gestational age using four different methods was performed in the same population of 358 Cameroonian newborn infants with the aim of determining the most applicable in the local context. Method applicability was compared in terms of validity, accuracy, reliability, and ease of administration. The gestational age ranged from 25 to 44 weeks. The infants were evaluated within 72 h from birth, using the scoring methods of Farr (FSM), Dubowitz (DSM), Ballard (New Ballard Score--NBS) and Eregie (ESM). The DSM was the most valid with a 93 per cent agreement within +/-2 weeks of gestational age by dates followed by the ESM with 92.4 per cent. The NBS and the FSM showed lower validity of 85.6 per cent and 78.3 per cent respectively. The ESM was the most accurate with a mean difference (MD) in weeks (+/-1 SD) between gestational age by method and gestational age by dates of 0.259+/-1.376, followed by the NBS with 0.355+/-1.51. The DSM was fairly accurate with a MD of 0.500+/-1.31, and the FSM the least accurate with a MD of 1.228+/-1.495. The DSM was the most reliable with a high correlation coefficient (r) of 0.94. The NBS and the ESM had comparable reliability with correlation coefficient of 0.93 each. The easiest to administer was the ESM, completed in an average of 41 s, followed by the FSM in 1 min 22 s. The NBS was completed in 2 min 48 s and the DSM in 4 min 28 s. We concluded that the Eregie model has comparable validity and reliability to the Dubowitz score but is more accurate, simple, and very easy to administer. It is therefore recommended where the workload is heavy and health personnel limited, as is the case in developing countries.

[Kangaroo mother care: bibliographical review on the current attitudes, their interests and their limits]. / Les unités et soins kangourou: revue bibliographique sur les attitudes actuelles, leurs intérêts et leurs limites.

Initiated in 1978 by a Colombian team, then largely adapted in industrialized countries as well as in poor developed countries, the kangaroo mother care (KMC) are known to ensure for low birth weight newborn, a thermoregulation, a good physiological stability and a better relational comfort with their parents. The goal of this work is to make a bibliographical review on current concepts, interests and limits of this method. We re-examined impact of the KMC on the basal metabolism, thermoregulation, growth and evolution of these children. They are helpful in the developing countries but medical safety should not be forgotten. In these countries where there's high frequentation of the services, they are able to regulate body temperature and metabolic adaptation of the newborn. In developed countries, KMC contribute to decrease anxiety of parents and improve the relations with their child. However, it is difficult to recommend their use in current practice. Rigorous randomised studies are necessary to argue their establishment in full safety, to know the neuropsychological development and the real somatic growth on the long term of the children and to known their true economic cost.

Clinical trial of beta-arteether versus quinine for the treatment of cerebral malaria in children in Yaounde, Cameroon.

One hundred and two children aged 0-10 years with cerebral malaria (Blantyre coma score of 2 or less) were randomly treated either with intramuscular arteether (3.2 mg/kg on Day 0, followed by 1.6 mg/kg on Days 1 to 4) or intravenous (i.v.) quinine dihydrochloride (20 mg of the salt/kg, followed by 10 mg of the salt/kg every 8 hr up to Day 6). Treatment with oral quinine sulfate (10 mg/kg every 8 hr) was substituted for i.v. quinine when the patient was able to take oral medicine. All patients were followed up in the hospital for 7 days; thereafter, they were treated as outpatients on Days 14, 21, and 28. Mortality rate, the main efficacy parameter, was 11.8% lower in the arteether treatment group than in the quinine group (15.7% versus 27.4%); however, the difference was not significant (P = 0.25). Means for fever clearance time, coma resolution time, and parasite clearance time were similar in the 2 treatment groups (42.2 +/- 34.9 hr; 34.8 +/- 18.8 hr, and 46.3 +/- 28.5 hr, respectively for arteether, versus 45.0 +/- 26.7 hr; 30.3 +/- 18.9 hr, and 40.7 +/- 18.9 hr, respectively, for quinine). At 28 days, the cure rates were 73.2% and 64.9% for the arteether and quinine treatment groups, respectively. Arteether is safe and therapeutically at least as effective as quinine for the treatment of cerebral malaria in children in Cameroon. Because of its ease of administration, arteether appears to be suited for use in the rural zones where monitoring facilities do not exist.

The epidemiology of Plasmodium falciparum malaria in two Cameroonian villages: Simbok and Etoa.

In support of ongoing immunologic studies on immunity to Plasmodium falciparum, demographic, entomologic, parasitologic, and clinical studies were conducted in two Cameroonian villages located 3 km apart. Simbok (population = 907) has pools of water present year round that provide breeding sites for Anopheles gambiae, whereas Etoa (population = 485) has swampy areas that dry up annually in which A. funestus breed. Results showed that individuals in Simbok receive an estimated 1.9 and 1.2 infectious bites per night in the wet and dry season, respectively, whereas individuals in Etoa receive 2.4 and 0.4 infectious bites per night, respectively. Although transmission patterns differ, the rate of acquisition of immunity to malaria appears to be similar in both villages. A prevalence of 50-75% was found in children < 10 years old, variable levels in children 11-15 years old, and 31% in adults. Thus, as reported in other parts of Africa, individuals exposed to continuous transmission of P. falciparum slowly acquired significant, but not complete, immunity.

[Severe forms of malaria in children in a general hospital pediatric department in Yaounde, Cameroon]. / Les formes graves du paludisme de l'enfant dans un service de pédiatrie générale à Yaoundé, Cameroun.

Severe forms of malaria in children are responsible for 1 million deaths yearly in young children in hyperendemic areas. The main objective of this study was to identify and compare common manifestations of different forms of severe malaria and to evaluate the prognosis for hospital treatment in an endemic area. 271 files of children admitted into hospital between March 1991 and September 1996 were analysed. These children were confirmed to have Plasmodium falciparum in their peripheral blood. 78 patients (29%) had the severe form of malaria. 43 patients (53%) were under 5 years of age. The 5 severe types identified were characterized by very high temperatures 28 cases (36%), cerebral malaria 20 cases (26%), prostration and weakness 15 cases (19%), severe anaemia 14 cases (18%) and haemoglobinuria 1 case (1.3%). Cerebral malaria and severe anaemia were more common in children under 5 years old. The average parasitemia was 16,366 +/- 1390 parasites per microlitre. Clearance of parasitemia was obtained on day 3 in almost all cases; 6 patients with very high temperatures presented neither sign of visceral complications nor convulsions. The average period in coma for cases of cerebral malaria was 1.7 days; 12 anaemic patients were transfused. There were no deaths. No abnormality was found on physical examination after an average hospitalisation of 5.3 days. An early diagnosis and adequate treatment of severe forms of malaria in children by qualified personnel will usually result in a favourable prognosis in our area.

Approche etiologique des anemies severes de l'enfant a partir d'examens paracliniques simples

Les auteurs de ce texte ont eu pour objectif d'etudier l'apport de cinq examens complementaires simples; peu couteux; dans l'approche etiologique des anemies severes de l'enfant. 78 enfants ages de 1 mois a 5 ans ayant un taux d'hemoglobine inferieur a 8g/100ml ont eu une numeration sanguine; une numeration des reticulocytes; une goutte epaisse; une electrophorese de l'hemoglobine. 48 d'entre-eux ont eu un examen parasitologique des selles. Le taux moyen d'hemoglobine etait de 4;5g/100ml. 52 malades (66;7 pour cent) avaient une microcytose et/ou une hypochromie; faisant evoquer une carence martiale isolee ou associee a d'autres causes. 9 (11;5 pour cent) avaient une macrocytose; faisant suspecterune carence en acide folique. 49 (62;8 pour cent) avaient une goutte epaisse positive a Plasmodium falciparum. 51 malades (65;4 pour cent) presentaient un ou plusieurs signes cliniques en faveur d'une hemolyse. 3 enfants seulement sur 48 ayant produit des selles (6;2 pour cent) portaient des parasites intestinaux anemiants (2 cas d'ankylostomes; 1 cas d'entamoeba histolytica). 1 enfant etait drepanocytaire homozygote. Au total; ces anemies severes avaient des etiologies multifactorielles dominees par la carence martiale et l'hemolyse palustre

Accidents neurologiques de la vaccination anticoquelucheuse : a propos de 17 observations

Les sequelles neurologiques et les cas mortels representent tout le danger et la gravite de la vaccination anticoquelucheuse. De l'analyse de 17 observations; le traitement curatif des accidents neurologiques de cette vaccination ne peut etre que symptomatique alors que sa prevention reside dans le respect scrupuleux des contre-indications qui meritent d'etre enumerees: maladie infectieuse aigue; recente ou evolutive; les affections malignes; les cardiopathies decomposees; la nephropathie aigue; le traitement immuno-suppresseur; les antecedents personnels de souffrance aigue ou perinatale; de prematurite ou d'hypotrophie foetale; la survenue des convulsions et/ou d'autres signes neurologiques a la suite d'une vaccination anticoquelucheuse anterieure; les encephalopathies et la comitialite

Sequelles neurologiques des meningites bacteriennes chez le nourrisson et l'enfant a Yaounde

144 enfants ages de 1 mois a 14 ans ont ete hospitalises pour meningite bacterienne du 1er septembre 1992 au 31 juillet 1993. 43 sont decedes (29;86 pour cent) et 101 gueris ont fait l'objet d'une surveillance pluridisciplinaire (ORL; opthalmo; neuropediatrique) pendant une periode de 9 a 18 mois. 23;61 pour cent presentent des sequelles neurologiques: deficit auditif 25 pour cent; epilepsie 17;85 pour cent; deficit moteur 12;5 pour cent; trouble du comportement 10;71 pour cent; hydrocephalie 8;92 pour cent; cephalee 5;25 pour cent; trouble d'apprentissage scolaire 1;78 pour cent. La meningite purulente est la cinquieme cause d'hospitalisation et la troisieme cause de mortalite infantile a Yaounde. Les auteurs insistent sur la necessite de prendre en compte les facteurs de risques dans la prise en charge des meningites bacteriennes et la necessite d'une surveillance pluridisciplinaire

Morbidite hospitaliere; lesions echoencephalographiques; et etat neurologique d'une population d'anciens petits poids de naissance a la sortie d'hopital

Les auteurs ont etudie; chez 152 anciens petits poids de naissance au moment de leur sortie d'hopital; l'etat neurologique; les lesions echoencephalographiques; et les relations avec la morbidite hospitaliere. Leur poids de naissance moyen etait de 1 685 g; leur age gestationnel moyen de 33 semaines; et leur age corrige moyen de 37;3 semaines. 7 nouveau-nes etaient hypotrophes a terme (4;6 pour cent). 26 etaient prematures et hypotrophes (17;10 pour cent); 119 etaient prematures et eutrophiques (78;30 pour cent). La morbidite hospitaliere etaient dominee par les hypothermies et les infections. Les hemorragies cerebrales etaient les lesions echographiques les plus frequentes (6;23 pour cent). 15 enfants avaient un examen neurologique anormal (9;87 pour cent); dont 5 presentaient une lesion cerebrale a l'echographie. Toutes les lesions hemorragiques etaient survenues chez les prematures d'age gestationnel compris entre 29 et 34 semaines. L'existence d'une lesion cerebrale a l'echographie exposait 7 fois plus a un risque d'anomalie neurologique. En conclusion; de nombreuses pathologies peuvent etre prevenues. Le depistage echographique des lesions doit etre precoce

Aspects cliniques et etiologiques de l'epilepsie du nourrisson et de l'enfant a Yaounde

9392 enfants ages de 0-15 ans ont ete examines aux urgences et consultations de l'hopital central de Yaounde (Cameroun) pendant la periode d'etude. Sur la base des criteres essentiellement cliniques; 174 enfants presentent l'epilepsie qui represente 1;85 pour cent des affections pediatriques a Yaounde. Les convulsions febriles precedent l'epilepsie chez 83 enfants (47;70 pour cent). Les auteurs ont trouve des antecedents personnels probablement en rapport avec l'epilepsie dans les proportions suivantes: antecedents antenataux chez 33 enfants (18;96 pour cent); antecedents perinataux chez 36 enfants (20;68 pour cent); antecedents post-nataux chez 45 enfants (25;86 pour cent). Les differents types d'epilepsie ont ete rencontres; dans des proportions variables