A5044076582- Parasites and Host Interactions
- Malaria Research and Control
- Mosquito-borne diseases and control
- Insect Resistance and Genetics
- Parasite Biology and Host Interactions
- Child Nutrition and Water Access
- Zoonotic diseases and public health
- Global Maternal and Child Health
- Viral Infections and Vectors
- Evolution and Genetic Dynamics
- Agriculture and Rural Development Research
- Aquatic Invertebrate Ecology and Behavior
- Helminth infection and control
- Genetic diversity and population structure
- Viral Infections and Outbreaks Research
- Religion and Sociopolitical Dynamics in Nigeria
- Aquatic Ecosystems and Biodiversity
- Vector-Borne Animal Diseases
- Dengue and Mosquito Control Research
- Fish Biology and Ecology Studies
- Agricultural pest management studies
- Hemoglobinopathies and Related Disorders
- Animal Ecology and Behavior Studies
Centre de Recherche Médicale et Sanitaire
2006-2022
Centre Pour le Développement des Vaccins-Mali
2020
Ministère de la Santé Publique
2008
Institut Pasteur
2008
At the end of 2005, a nationwide long-lasting insecticide-treated net (LLIN) distribution targeting most vulnerable populations was implemented throughout Niger. A large number studies in Africa have reported existence anopheline resistant to various insecticides, partly due knockdown resistance (kdr) mutations, but few operational wide-scale control programmes were coupled with monitoring such mutations. The kdr-west (kdr-w) Leu-Phe mutation studied Anopheles gambiae s.l. from Niger and...
Sound knowledge of the abundance and distribution intermediate host snails is key to understanding schistosomiasis transmission inform effective interventions in endemic areas.A longitudinal field survey freshwater biomedical importance was undertaken Niger River Valley (NRV) between July 2011 January 2016, targeting Bulinus spp. Biomphalaria pfeifferi (intermediate hosts Schistosoma spp.), Radix natalensis Fasciola spp.). Monthly snail collections were carried out 92 sites, near 20...
Abstract Hermaphrodite tropical freshwater snails provide a good opportunity to study the effects of mating system and genetic drift on population structure because they are self-fertile occupy transient patchily distributed habitats (ponds). Up now lack detectable allozyme polymorphism prevented any intrapopulation studies. In this paper, we examine consequences selfing bottlenecks using microsatellite markers in 14 natural populations (under hierarchical sampling design) hermaphrodite...
Abstract Background The health authorities of Niger have implemented several malaria prevention and control programmes in recent years. These interventions broadly follow WHO guidelines international recommendations are based on that proved successful other parts Africa. Most performance indicators satisfactory but, paradoxically, despite the mobilization considerable human financial resources, malaria-fighting programme seems to stalled, as it has not yet yielded expected significant...
Abstract Background Few data are available about malaria epidemiological situation in Niger. However, implementation of new strategies such as vaccination or seasonal treatment a target population requires the knowledge baseline features malaria. A population-based study was conducted to provide better characterization variations and groups most at risk this particular area. Methods From July 2007 December 2009, presumptive cases among living typical Sahelian village Niger were recorded,...
Summary A cluster sample survey was conducted in 1998 30 schools to assess the effect of growth Niamey during last decade on a urinary schistosomiasis urban focus described 1989. Two thousand and forty‐two children (11.0 + 0.1 years old) had urine filtration test answered behavioural questionnaire. Snail populations sites used by schoolchildren were followed up 1999. The global prevalence 15.7% 1998, as opposed 23.7% very low far from river higher those along Niger banks, particularly...
Information on insecticide resistance and the mechanisms driving it in major malaria vectors is grossly lacking Niger Republic, thus hindering control efforts. To facilitate evidence-based control, role of Anopheles coluzzii population from southern Niger, transmission, its insecticides profile molecular were characterized. Blood fed female gambiae sensu lato resting indoor collected at Tessaoua, Niger. Source blood was established using PCR infection with Plasmodium determined TaqMan assay....
Malacological monitoring of two irrigated areas in Niger highlighted the natural susceptibility Bulinus forskalii to infection with Schistosoma haematobium when parasitic load is high. This first report S. B. forskalii, which an abundant snail areas, has been confirmed experimentally.
Urbanization in African cities has major impact on malaria risk. Niamey, the capital of Republic Niger, is situated West Sahel zone. The short rainy season and human activities linked with Niger River influence mosquito abundance. This study aimed at deciphering factors distribution urban vectors Niamey. aquatic stages was investigated monthly from December 2002 to November 2003, up 84 breeding sites, throughout An exploratory analysis association between abundance environmental performed by...
Annual and seasonal changes in population densities of Bulinus senegalensis Müller 1781 B. truncatus (Audouin, 1827) were studied temporary pools the west sahelian zone Niger relation to environmental factors. is present whatever their duration, whereas inhabits only more persistent pools. populations develop mostly during rainy season when water temperature warm. most abundant after cooler, but this snail may increase warmer unusual seasons with low intermittent rainfall. Field observations...
Its climate and environmental conditions put Niger at particularly high risk of the spread Aedes mosquitoes, which can transmit arboviruses. In September 2016, Republic reported its first outbreak Rift Valley Fever (RVF) in northern region Tahoua, near Mali border, departments Tchintabaraden, Tassara, Abalak. The history RVF has showed that epidemics epizootics have a considerable socioeconomic impact affected countries, such as Niger, whose populations are concerned by livestock farming....
Malaria transmission was monitored in two villages the Sahel zone of Niger over 4 years. During this period, a nationwide vector control programme carried out which insecticide‐treated bednets were distributed free to mothers children aged <5 Anopheles gambiae and arabiensis (Diptera: Culicidae) found be major malaria vectors. The dynamics An. s.l. did not vary dramatically study period although proportion female mosquitoes resting indoors decreased both and, one village, parity rate...
Urinary and intestinal schistosomiasis are both endemic in Niger with a dominance of Schistosoma haematobium. This study pointed out the appearance infection to S. mansoni River valley, where it was until then unknown Niger. In one year prevalence increased from 5.9 19.5%.
Mass distribution of insecticide-treated nets (ITNs) is the principal malaria vector control strategy adopted by Niger. To better inform on most appropriate ITN to distribute, National Malaria Control Programme (NMCP) Niger and its partners, conducted insecticide resistance monitoring in selected sites across country.The susceptibility Anopheles gambiae sensu lato (s.l.) chlorfenapyr pyrethroid insecticides was investigated a total sixteen 2019 2020, using 2-5-day-old adults reared from wild...
The increasing usage of long-lasting insecticide-treated nets allows protection millions people from malaria infection. Monitoring studies should be planned during any wide-scale control program integrating materials, to evaluate their effects and effectiveness on epidemiologically relevant parameters. Such operational interventions may challenged by insecticide resistance spread within vector populations, as a result wide pressure. A nationwide distribution insecticidal was implemented...
Results and discussion During the first year of follow-up, vector dynamics showed an overall decrease in malaria transmission, but this was highly variable from village to village. Indeed, second survey a return transmission levels close pre-intervention period. A study microsatellite markers no modification genetic structure two vectors An. gambiae arabiensis. However, clear increase resistant allele kdr gene resistence pyrethroid insecticide used bed nets observed. This clearly...
Intrinsic vector characteristics and environmental factors affect the sporogonic development of P. falciparum in Anopheles mosquitoes. We tested for presence circumsporozoite protein, as a marker oocyst to sporozoite transition naturally infected gambiae s.l. funestus. Malaria vectors were collected village Sahel Niger during rainy dry seasons. ELISA-CSP was carried out on abdomen head/thorax portions from more than 2,000 samples. No significant difference found overall rates infection An....
The increasing usage of long-lasting insecticide-treated nets allows protection millions people from malaria infection. Monitoring studies should be planned during any wide-scale control program integrating materials, to evaluate their effects and effectiveness on epidemiologically relevant parameters. Such operational interventions may challenged by insecticide resistance spread within vector populations, as a result wide pressure. A nationwide distribution insecticidal was implemented...