1. Microbiology and Parasitology Department Centre for Research in Infectious Diseases Yaounde Cameroon
2. Department of Microbiology and Parasitology, Faculty of Science University of Buea Buea Cameroon
3. Department of Biochemistry, Laboratory of Pharmacology and Toxicology University of Yaounde I Yaounde Cameroon
4. Vector Biology Department Liverpool School of Tropical Medicine Liverpool UK