EDCTP Alumni Network

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All Profiles

Dr Francis Zeukeng

Call EDCTP-AREF Preparatory Fellowships (PF)
Programme EDCTP2
Start Date 2020-10-01
End Date 2021-12-31
Project Code TMA2019PF-2693
Status Active

Title

Developing advanced Genomics and Bioinformatics skills and application to uncover route of transmission of Buruli ulcer in Africa.

Objectives

The fellowship primarily aimed to build capacity in advanced Genomics and Bioinformatics with application to Buruli ulcer disease.

Host Organisation

Institution Country
Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana Ghana
University of Yaounde 1 Cameroon

Participants

Name Institution Country
Prof. Jude Bigoga The Biotechnology Centre, University of Yaounde 1 Cameroon
Prof. Anthony Ablordey Noguchi Memorial Institute for Medical Research, College of Health Science, University of Ghana Ghana

Study Design

[1] Capacity building in advanced Genomics technologies. [2] Capacity building in advanced Bioinformatics. [3] Population genomics study of M. ulcerans isolates from Buruli ulcer endemic areas in Cameroon. [4] Deepen research partnerships and develop new networking.

Phd Study

Title University Start Date End Date
Ph.D in Biochemistry [thesis in Molecular Epidemiology of Infectious Diseases] University of Yaounde 1, Cameroon 2013-02-04 2018-12-10

Publications

Zeukeng F, Anthony A, Kakou-Ngazoa ES, Ghogomu MS, Coulibaly ND, Ngo-Nsonga MT, Mbacham FW, Bigoga DJ, Djouaka R. Community-based geographical distribution of Mycobacterium ulcerans VNTR-genotypes from the environment and humans in the Nyong valley, Cameroon. Trop Med Health. 2021, 49:41. https://doi.org/10.1186/s41182-021-00330-2 .

Current Organisation

The Biotechnology Centre, University of Yaounde 1, Cameroon

Current Job Title

Postdoc Fellow

Students Supervised

Type Name Title University Start Date End Date

Memberships

Role Committee/board Start Date End Date
Member International Society for Neglected Tropical Diseases (ISNTD) 2021 2022

Education

Institution Degree Year
,

Areas Of Specialisation

Tuberculosis (TB) Malaria Neglected Infectious Diseases (NID)

Grants

Publications

High vector diversity and malaria transmission dynamics in five sentinel sites in Cameroon
Authors:
Etienne Fondjo , author
Jean-Claude Toto , author
Magellan Tchouakui , author
Wolfgang Ekoko Eyisap , author
Salomon Patchoke , author
Benjamin Menze , author
Boris Njeambosay , author
Francis Zeukeug , author
Raymond Tabue Ngomdjum , author
Elysée Mandeng , author
Emmanuel Elanga-Ndille , author
Edmond Kopya , author
Jerome Achille Binyang , author
Cyrille Ndo , author
Billy Tene-Fossog , author
Armel Tedjou , author
Elysée Nchoutpouen , author
Frederic Tchouine , author
Dorothy Achu , author
Kelley Ambrose , author
Judith Hedje , author
Celestin Kouambeng , author
Jenny Carlson , author
Sarah Zohdy , author
Joseph Chabi , author
Date:
2023-04-13
Journal:
Malaria Journal
Content:
Abstract Background Malaria remains one of the main causes of morbidity and mortality in Cameroon. To inform vector control intervention decision making, malaria vector surveillance was conducted monthly from October 2018 to September 2020 in five selected sentinel sites (Gounougou and Simatou in the North, and Bonabéri, Mangoum and Nyabessang in the South). Methods Human landing catches (HLCs), U.S. Centers for Disease Control and Prevention (CDC) light traps, and pyrethrum spray catches (PSCs) were used to assess vector density, species composition, human biting rate (HBR), endophagic index, indoor resting density (IRD), parity, sporozoite infection rates, entomological inoculation rate (EIR), and Anopheles vectorial capacity. Results A total of 139,322 Anopheles mosquitoes from 18 species (or 21 including identified sub-species) were collected across all sites. Out of the 18 species, 12 were malaria vectors including Anopheles gambiae sensu lato (s.l.), Anopheles funestus s.l.., Anopheles nili, Anopheles moucheti, Anopheles paludis, Anopheles demeilloni, Anopheles. pharoensis, Anopheles ziemanni, Anopheles multicinctus, Anopheles tenebrosus, Anopheles rufipes, and Anopheles marshallii. Anopheles gambiae s.l. remains the major malaria vector (71% of the total Anopheles) collected, though An. moucheti and An. paludis had the highest sporozoite rates in Nyabessang. The mean indoor HBR of Anopheles ranged from 11.0 bites/human/night (b/h/n) in Bonabéri to 104.0 b/h/n in Simatou, while outdoors, it varied from 24.2 b/h/n in Mangoum to 98.7 b/h/n in Simatou. Anopheles gambiae s.l. and An. moucheti were actively biting until at least 8:00 a.m. The mean Anopheles IRD was 17.1 females/room, and the parity rate was 68.9%. The mean EIRs for each site were 55.4 infective bites/human/month (ib/h/m) in Gounougou, 99.0 ib/h/m in Simatou, 51.2 ib/h/m in Mangoum, 24.4 ib/h/m in Nyabessang, and 18.1 ib/h/m in Bonabéri. Anopheles gambiae s.l. was confirmed as the main malaria vector with the highest vectorial capacity in all sites based on sporozoite rate, except in Nyabessang. Conclusion These findings highlight the high malaria transmission occurring in Cameroon and will support the National Malaria Control Program to design evidence-based malaria vector control strategies, and deployment of effective and integrated vector control interventions to reduce malaria transmission and burden in Cameroon, where several Anopheles species could potentially maintain year-round transmission.
Multiple Resistance Mechanisms to Pyrethroids Insecticides in <i>Anopheles gambiae sensu lato</i> Population From Mali, West Africa
Authors:
Moussa Keïta , author
Nafomon Sogoba , author
Fousseyni Kané , author
Boissé Traoré , author
Francis Zeukeng , author
Boubacar Coulibaly , author
Ambiélè Bernard Sodio , author
Sekou Fantamady Traoré , author
Rousseau Djouaka , author
Seydou Doumbia , author
Date:
2021-04-27
Journal:
The Journal of Infectious Diseases
Content:
Abstract Background Insecticide-based vector control is responsible for reducing malaria mortality and morbidity. Its success depends on a better knowledge of the vector, its distribution, and resistance status to the insecticides used. In this paper, we assessed Anopheles gambiae sensu lato (A gambiae s.l.) population resistance to pyrethroids in different ecological settings. Methods The World Health Organization standard bioassay test was used to assess F0A gambiae s.l. susceptibility to pyrethroids. Biochemical Synergist assays were conducted with piperonyl butoxide (PBO), S,S,S-tributyl phosphotritioate, and diethyl maleate. L1014F, L1014S, and N1575Y knockdown resistance (kdr) mutations were investigated using TaqMan genotyping. Results Anopheles gambiae sensu lato was composed of Anopheles arabienisis, Anopheles coluzzii, and A gambiae in all study sites. Anopheles gambiae sensu lato showed a strong phenotypic resistance to deltamethrin and permethrin in all sites (13% to 41% mortality). In many sites, pre-exposure to synergists partially improved the mortality rate suggesting the presence of detoxifying enzymes. The 3 kdr (L1014F, L1014S, and N1575Y) mutations were found, with a predominance of L1014F, in all species. Conclusions Multiple resistance mechanisms to pyrethroids were observed in A gambiae s.l. in Mali. The PBO provided a better partial restoration of susceptibility to pyrethroids, suggesting that the efficacy of long-lasting insecticidal nets may be improved with PBO.
Domestic animals infected with Mycobacterium ulcerans—Implications for transmission to humans
Authors:
Rousseau Djouaka , author
Joseph M. Vinetz , editor
Francis Zeukeng , author
Jude Daiga Bigoga , author
Solange E. Kakou-Ngazoa , author
Romaric Akoton , author
Genevieve Tchigossou , author
David N’golo Coulibaly , author
Sodjinin Jean-Eudes Tchebe , author
Sylla Aboubacar , author
Clavella Nantcho Nguepdjo , author
Eric Tossou , author
Razack Adeoti , author
Thèrèse Marie Ngo Nsonga , author
Yao Akpo , author
Innocent Djegbe , author
Manuele Tamo , author
Wilfred Fon Mbacham , author
Anthony Ablordey , author
Date:
2018-07-02
Journal:
PLOS Neglected Tropical Diseases
Content:
Experimental huts trial of the efficacy of pyrethroids/piperonyl butoxide (PBO) net treatments for controlling multi-resistant populations of Anopheles funestus s.s. in Kpomè, Southern Benin
Authors:
Romaric Akoton , author
Genevieve M. Tchigossou , author
Innocent Djègbè , author
Akadiri Yessoufou , author
Michael Seun Atoyebi , author
Eric Tossou , author
Francis Zeukeng , author
Pelagie Boko , author
Helen Irving , author
Razack Adéoti , author
Jacob Riveron , author
Charles S. Wondji , author
Kabirou Moutairou , author
Rousseau Djouaka , author
Date:
2018-06-13
Journal:
Wellcome Open Research
Content:
Distribution of acetylcholinesterase (Ace-1R) target-site G119S mutation and resistance to carbamates and organophosphates in Anopheles gambiae sensu lato populations from Cameroon
Authors:
Achille Jerome Binyang , author
Emmanuel ELANGA-NDILLE , author
Billy Tene-Fossog , author
Cyrille Ndo , author
Lynda Nouage , author
Tatiane Assatse , author
Yvan Fotso-Toguem , author
Raymond Tabue , author
Francis Zeukeng , author
Daniel Nguete Nguiffo , author
Josiane Etang , author
Flobert Njiokou , author
Charles S. Wondji , author
Date:
2022-02-14
Journal:
Parasites & Vectors
Content:
Abstract Background Cameroon is considering the implementation of indoor residual spraying (IRS) as a complementary measure to control malaria in the context of high pyrethroid resistance in major malaria vectors. Non-pyrethroid insecticide classes such as organophosphates and carbamates may be utilized in IRS due to widespread pyrethroid resistance. However, the success of this strategy depends on good knowledge of the resistance status of malaria vectors to carbamates and organophosphates. Here, we assessed the susceptibility profile of Anopheles gambiae sensu lato with respect to carbamates and organophosphate and the distribution of the molecular mechanism underlying resistance to these insecticides. Methods Anopheles gambiae s.l. mosquitoes were collected from nine settings across the country and bio-assayed with bendiocarb, propoxur and pirimiphos-methyl. The Ace-1 target-site G119S mutation was genotyped using a TaqMan assay. To investigate the polymorphism in the Ace-1 gene, a region of 924 base pairs in a sequence of the gene was amplified from both live and dead females of An. gambiae exposed to bendiocarb. Results Pirimiphos-methyl induced full mortality in An. gambiae s.l. from all study sites, whereas for carbamates, resistance was observed in four localities, with the lowest mortality rate recorded in Mangoum (17.78 ± 5.02% for bendiocarb and 18.61 ± 3.86% for propoxur) in the southern part of Cameroon. Anopheles coluzzii was found to be the predominant species in the northern tropical part of the country where it is sympatric with Anopheles arabiensis. In the localities situated in southern equatorial regions, this species was predominant in urban settings, while An. gambiae was the most abundant species in rural areas. The G119S Ace-1 target-site mutation was detected only in An. gambiae and only in the sites located in southern Cameroon. Phylogenetic analyses showed a clustering according to the phenotype. Conclusion The occurrence of the Ace-1 target-site substitution G119S in An. gambiae s.l. populations highlights the challenge associated with the impending deployment of IRS in Cameroon using carbamates or organophosphates. It is therefore important to think about a resistance management plan including the use of other insecticide classes such as neonicotinoids or pyrrole to guarantee the implementation of IRS in Cameroon. Graphical Abstract
Susceptibility Profiles of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) to Deltamethrin Reveal a Contrast between the Northern and the Southern Benin
Authors:
Eric Tossou , author
Ghislain Tepa-Yotto , author
Ouorou K. Douro Kpindou , author
Ruth Sandeu , author
Benjamin Datinon , author
Francis Zeukeng , author
Romaric Akoton , author
Généviève M. Tchigossou , author
Innocent Djègbè , author
John Vontas , author
Thibaud Martin , author
Charles Wondji , author
Manuele Tamò , author
Aimé H. Bokonon-Ganta , author
Rousseau Djouaka , author
Date:
2019-05-28
Journal:
International Journal of Environmental Research and Public Health
Content:
Co-infections of Malaria and Geohelminthiasis in Two Rural Communities of Nkassomo and Vian in the Mfou Health District, Cameroon
Authors:
Zeukeng, F.
Tchinda, V.H.M.
Bigoga, J.D.
Seumen, C.H.T.
Ndzi, E.S.
Abonweh, G.
Makoge, V.
Motsebo, A.
Moyou, R.S.
Date:
2014-01-01
Journal:
PLoS Neglected Tropical Diseases
Content:
Water source most suitable for rearing a sensitive malaria vector, Anopheles funestus in the laboratory [version 2; referees: 2 approved]
Authors:
Genevieve Tchigossou , author
Romaric Akoton , author
Akadiri Yessoufou , author
Innocent Djegbe , author
Francis Zeukeng , author
Seun M Atoyebi , author
Eric Tossou , author
Kabirou Moutairou , author
Rousseau Djouaka , author
Date:
2018-01-29
Journal:
Content:
Evidences of the Low Implication of Mosquitoes in the Transmission of Mycobacterium ulcerans, the Causative Agent of Buruli Ulcer
Authors:
Rousseau Djouaka , author
Francis Zeukeng , author
Jude Daiga Bigoga , author
David N’golo Coulibaly , author
Genevieve Tchigossou , author
Romaric Akoton , author
Sylla Aboubacar , author
Sodjinin Jean-Eudes Tchebe , author
Clavella Nantcho Nguepdjo , author
Razack Adeoti , author
Innocent Djegbe , author
Manuele Tamo , author
Wilfred Fon Mbacham , author
Solange E. Kakou-Ngazoa , author
Anthony Ablordey , author
Date:
2017-01-01
Journal:
Canadian Journal of Infectious Diseases and Medical Microbiology
Content:
Diversity and behavioral activity of Anopheles mosquitoes on the slopes of Mount Cameroon
Authors:
Pilate N. Kwi , author
Elvis E. Ewane , author
Marcel N. Moyeh , author
Livinus N. Tangi , author
Vincent N. Ntui , author
Francis Zeukeng , author
Denis D. Sofeu-Feugaing , author
Eric A. Achidi , author
Fidelis Cho-Ngwa , author
Alfred Amambua-Ngwa , author
Jude D. Bigoga , author
Tobias O. Apinjoh , author
Date:
2022-09-28
Journal:
Parasites & Vectors
Content:
Abstract Background Malaria remains endemic in Cameroon, with heterogeneous transmission related to eco-climatic variations, vector diversity and spatial distribution. The intensification of malaria prevention and control through the free distribution of insecticide-treated nets in recent years may have altered the composition, geographic distribution and natural infection rate of Anopheles species, with implications for malaria transmission dynamics. The present study seeks to assess the vectorial diversity, dynamics and infectivity across different seasons and altitudes in relationship to parasite prevalence around the slopes of Mount Cameroon, southwestern region. Method Mosquitoes were sampled (indoors and outdoors) in 11 eco-epidemiological settings at low (18–197 m), intermediate (371–584 m) and high (740–1067 m) altitude by nightly human landing catches. The mosquitoes were identified morphologically and Anopheles gambiae sibling species identified by PCR. Parity status was ascertained by examining the ovaries and the entomological inoculation rates (EIR) determined by Plasmodium falciparum circumsporozoite antigen ELISA of the head-thorax. The prevalence of Plasmodium infection across target communities was assessed using rapid diagnostic tests. Results A total of 7327 (18.0 mosquitoes/trap/night) mosquitoes were trapped, mainly during the rainy season (5678, 77.5%) and at low altitude (3669, 50.1%). Anopheles spp. (5079, 69.3%) was the most abundant genera and An. gambiae complex (2691, 36.7%) the major vector, varying with altitude (χ2 = 183.87, df = 8, P < 0.001) and season (χ2 = 28.14, df = 4, P < 0.001). Only An. gambiae (s.s.) was identified following molecular analysis of An. gambiae complex siblings. The overall biting peak for An. gambiae complex was 2—3 a.m. Anopheles cinctus was the most abundant secondary vector in the area. The average EIR in the area was 2.08 infective bites per person per night (ib/p/n), higher at low (2.45 ib/p/n) than at intermediate altitude (1.39 ib/p/n) and during the rainy (1.76 ib/p/n) compared to the dry season (0.34 ib/p/n). Anopheles funestus was most infectious overall (28.1%, 16/57) while An. gambiae had the highest inoculation rates averaging 1.33 ib/p/n. Most Anopheles species across all altitudes and seasons were parous, highest in communities with the highest proportion of malaria parasite infections. Conclusion Anopheles gambiae (s.s.) remains the major malaria vector in the area and An. cinctus possibly a secondary vector of the disease in the slopes of Mt. Cameroon. The seasonal and altitudinal effects on the distribution of these mosquitoes may have implications for the transmission of malaria and its control strategies in the area. Regular monitoring of the bionomics of local Anopheles vector species and targeted control interventions in the ‘hotspots’ is necessary to curb the prevalence of the infection and incidence of disease.
Water source most suitable for rearing a sensitive malaria vector, Anopheles funestus in the laboratory [version 1; referees: awaiting peer review]
Authors:
Genevieve Tchigossou , author
Romaric Akoton , author
Akadiri Yessoufou , author
Innocent Djegbe , author
Francis Zeukeng , author
Seun M Atoyebi , author
Eric Tossou , author
Kabirou Moutairou , author
Rousseau Djouaka , author
Date:
2017-11-10
Journal:
Content:
Domestic animals infected with Mycobacterium ulcerans – Implications for transmission to humans
Authors:
F. Zeukeng , author
R. Djouaka , author
J.D. Bigoga , author
S.E. Kakou-Ngazoa , author
D. N’golo Coulibaly , author
T.M. Ngo Nsonga , author
M. Tamo , author
W.F. Mbacham , author
A. Ablordey , author
Date:
2020-01-01
Journal:
International Journal of Infectious Diseases
Content:
Factors associated to bed net use in cameroon: A retrospective study in mfou health district in the centre region
Authors:
Tchinda, V.H.M.
Socpa, A.
Keundo, A.A.
Zeukeng, F.
Seumen, C.T.
Leke, R.G.F.
Moyou, R.S.
Date:
2012-01-01
Journal:
Pan African Medical Journal
Content:
Acetylcholinesterase (ace-1R) target site mutation G119S and resistance to carbamates in Anopheles gambiae (sensu lato) populations from Mali
Authors:
Moussa Keïta , author
Fousseyni Kané , author
Oumar Thiero , author
Boissé Traoré , author
Francis Zeukeng , author
Ambiélè Bernard Sodio , author
Sekou Fantamady Traoré , author
Rousseau Djouaka , author
Seydou Doumbia , author
Nafomon Sogoba , author
Date:
2020-12-01
Journal:
Parasites & Vectors
Content:
Abstract Background The long-lasting insecticidal nets (LLINs) and indoor residual spraying of insecticide (IRS) are major malaria vector control strategies in Mali. The success of control strategies depends on a better understanding of the status of malaria vectors with respect to the insecticides used. In this study we evaluate the level of resistance of Anopheles gambiae (sensu lato) to bendiocarb and the molecular mechanism that underlies it. Methods Larvae of An. gambiae (s.l.) were collected from breeding habitats encountered in the three study sites and bioassayed with bendiocarb. The ace-1 target site substitution G119S was genotyped using a TaqMan assay. Results The three species of the An. gambiae complex in Mali, i.e. An. arabiensis, An. coluzzii and An. gambiae (s.s.) were found in sympatry in the three surveyed localities with different frequencies. We observed a resistance and suspicious resistance of the three species to bendiocarb with a mortality rate ranging from 37% to 86%. The allelic frequency of the G119S mutation was higher in An. gambiae (s.s.) compared to the other two species; 42.86%, 25.61% and 16.67% respectively in Dangassa, Koula, and Karadié. The allelic frequency of G119S in An. coluzzii ranged from 4.5% to 8.33% and from 1.43% to 21.15% for An. arabiensis. After exposure to bendiocarb, the G119S mutation was found only in survivors. The survival of Anopheles gambiae (s.l) populations from the three surveyed localities was associated with the presence of the mutation. Conclusions The study highlights the implication of G119S mutation in bendiocarb resistance in An. gambiae (s.s.), An. arabiensis and An. coluzzii populations from the three surveyed localities.
Do open garbage dumps play a role in canine rabies transmission in Biyem-Assi health district in Cameroon?
Authors:
Tabue N. Raymond , author
Madgan E. Roland , author
Kenfack M. M. Françoise , author
Zeukeng Francis , author
Esemu F. Livo , author
Seumen T. H. Clovis , author
Date:
2015-01-01
Journal:
Infection Ecology & Epidemiology
Content:
Experimental huts trial of the efficacy of pyrethroids/piperonyl butoxide (PBO) net treatments for controlling multi-resistant populations of Anopheles funestus s.s. in Kpomè, Southern Benin
Authors:
Romaric Bidossessi Akoton , author
Genevieve M. Tchigossou , author
Innocent Djègbè , author
Akadiri Yessoufou , author
Seun Atoyebi , author
Eric Tossou , author
Francis Zeukeng , author
Pelagie Boko , author
Helen Irving , author
Razack Adéoti , author
Jacob Riveron , author
Charles S. Wondji , author
Kabirou Moutairou , author
Rousseau Djouaka , author
Date:
2018-06-13
Journal:
Wellcome Open Research
Content:
Background:Insecticides resistance inAnophelesmosquitoes limits Long-Lasting Insecticidal Nets (LLIN) used for malaria control in Africa, especially Benin. This study aimed to evaluate the bio-efficacy of current LLINs in an area whereAn. funestuss.l.andAn. gambiaehave developed multi-resistance to insecticides, and to assess in experimental huts the performance of a mixed combination of pyrethroids and piperonyl butoxide (PBO) treated nets on these resistant mosquitoes.Methods:The study was conducted at Kpomè, Southern Benin. The bio-efficacy of LLINs againstAn. funestus and An. gambiaewas assessed using the World Health Organization (WHO) cone and tunnel tests. A released/recapture experiment following WHO procedures was conducted to compare the efficacy of conventional LLINs treated with pyrethroids only and LLINs with combinations of pyrethroids and PBO. Prior to huts trials, we confirmed the level of insecticide and PBO residues in tested nets using high performance liquid chromatography (HPLC).Results:Conventional LLINs (Type 2 and Type 4) have the lowest effect against local multi-resistantAn. funestus s.s. and An. coluzziipopulations from Kpomè. Conversely, when LLINs containing mixtures of pyrethroids and PBO (Type 1 and Type 3) were introduced in trial huts, we recorded a greater effect against the two mosquito populations (P < 0.0001). Tunnel test withAn. funestus s.s.revealed mortalities of over 80% with this new generation of LLINs (Type 1 and Type 3),while conventional LLINs produced 65.53 ± 8.33% mortalities for Type 2 and 71.25 ±7.92% mortalities for Type 4. Similarly, mortalities ranging from 77 to 87% were recorded with the local populations ofAn. coluzzii.Conclusion:This study suggests the reduced efficacy of conventional LLINs (Pyrethroids alone) currently distributed in Benin communities whereAnophelespopulations have developed multi-insecticide resistance. The new generation nets (pyrethroids+PBO) proved to be more effective on multi-resistant populations of mosquitoes.
Case Definitions of Clinical Malaria in Children from Three Health Districts in the North Region of Cameroon
Authors:
Raymond N. Tabue , author
Boris A. Njeambosay , author
Francis Zeukeng , author
Livo F. Esemu , author
Barrière A. Y. Fodjo , author
Philomina Nyonglema , author
Parfait Awono-Ambene , author
Josiane Etang , author
Etienne Fondjo , author
Dorothy Achu , author
Rose G. F. Leke , author
Célestin Kouambeng , author
Tessa B. Knox , author
Abraham P. Mnzava , author
Jude D. Bigoga , author
Date:
2019-04-16
Journal:
BioMed Research International
Content:
First report of the presence of L1014S Knockdown-resistance mutation in Anopheles gambiae s.s and Anopheles coluzzii from Togo, West Africa
Authors:
Innocent Djègbè , author
Romaric Akoton , author
Genevieve M. Tchigossou , author
Koffi Mensah Ahadji-Dabla , author
Seun Michael Atoyebi , author
Razack Adéoti , author
Francis Zeukeng , author
Guillaume Koffivi Ketoh , author
Rousseau Djouaka , author
Date:
2018-03-19
Journal:
Wellcome Open Research
Content:
Community-based geographical distribution of Mycobacterium ulcerans VNTR-genotypes from the environment and humans in the Nyong valley, Cameroon
Authors:
Francis Zeukeng , author
Anthony Ablordey , author
Solange E. Kakou-Ngazoa , author
Stephen Mbigha Ghogomu , author
David N’golo Coulibaly , author
Marie Thérèse Ngo Nsoga , author
Wilfred Fon Mbacham , author
Jude Daiga Bigoga , author
Rousseau Djouaka , author
Date:
2021-12-01
Journal:
Tropical Medicine and Health
Content:
Factors associated to bed net use in Cameroon: a retrospective study in Mfou health district in the Centre Region.
Authors:
Tchinda, V.H.
Socpa, A.
Keundo, A.A.
Zeukeng, F.
Seumen, C.T.
Leke, R.G.
Moyou, R.S.
Date:
2012-01-01
Journal:
The Pan African medical journal
Content:
The Effects of HIV Infection on the Immune Response to Malaria Among Pregnant Women in Kumba, Southwest Cameroon: Protocol for a Cross-sectional Study
Authors:
Bekindaka Ngemani Obase , author
Zeukeng Francis , author
Esemu Livo Forgu , author
Awanakam Honore , author
Jude Daiga Bigoga , author
Dickson S Nsagha , author
Date:
2023-01-24
Journal:
JMIR Research Protocols
Content:

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