Dr Mireji is the team leader of BioInnovate Africa supported project on Areawide control of tsetse flies using novel repellents and attractants. He is a senior scientist at Biotechnology Institute of the Kenya Agricultural and Livestock Research Organization (KALRO) in Kenya with a background in molecular biology, entomology and genetics.
He has lectured in various public universities in Kenya and maintains ongoing collaborative research programs with Yale School of Public Health, Yale University (USA) and Gulu University (Uganda), Kenya Tsetse and Trypanosomiasis Eradication Council (Kenya), Vector Health International (Tanzania)and Vector and Vector-Borne Diseases Research Institute (Tanzania).
His work focuses on chemical ecology, olfaction and genetics of insect vectors and pathogens of human and veterinary diseases. The primary subjects of his works are on malaria and trypanosomiasis.
His graduate works dealt with understanding how tsetse fly vectors of trypanosomiasis behaviorally respond to oil formulations of deltamethrin insecticide and how mosquito vectors of malaria of adapt pollution in urban environments. His postdoctoral works focused on bioinformatics and annotations of the tsetse fly genomes and downstream functional genomics analyses of the annotations. His lab continues to explore fascinating biology underlying the olfaction, genetics and ecology of these important insect vectors and their pathogens.