Aflatoxin human exposure and Aspergillus flavus variability in two diverse environments in Kenya

– Sheila Okoth –



Name: Prof. Sheila Okoth, Ph.D.
School of Biological Sciences
University of Nairobi
P.O. Box 30197 – 00100, Nairobi


Professional Preparation
1986: Kenyatta University (Kenya), Botany/Zoology B. Sc. Ed. (Hons.)
1992: University of Nairobi (Kenya), Mycology MSc.
1998: University of Nairobi (Kenya), Mycology Ph.D
2002: International Agricultural Centre, Wageningen (The Netherlands), Biotechnoloby and Biotechnology – Certificate
2010: Finnish Food Safety Authority (EVIRA) and Agrifood Research (MTT) (Finland), Detection techniques for mycotoxins and toxigenic fungi in the food chain – -Certificate
2012: Institute of Sciences of Food Production (ISPA-CNR) Bari, (Italy), Detection techniques for mycotoxins and toxigenic fungi in the food chain – Certificate
2012: Stellenbosch University, (South Africa), Molecular Techniques for fungal identification – Certificate

Synergistic Activities
First Vice President of the African Society of Mycotoxicology 2015-2018

External faculty at University of Johannesburg

External faculty at Biosciences Eastern and Central Africa Hub, International Livestcok Research Institute

Selected Publications
Okoth, SO., De Boevre, M., Vidal, A., Di Mavungu, J.D., Landschoot, S., Kyallo, M., Njuguna, J., Jagger, H. and DeSaeger, S., 2018. Genetic and toxigenic variability within Aspergillus flavus population isolated from maize in two diverse environments in Kenya. Frontiers in Microbiology, 9, p.57.

Marijani E., Nasimolo, J., Kigadye, E., Gnonlonfin GJB., Okoth S., 2017. Sex-related differences in hematological parameters and organosomatic indices of Oreochromis niloticus exposed to aflatoxin B1 diet. Hindawi Scientifica Article ID 4268926, 7 pages

Marijani, E., Wainaina, JM., Charo-Karisa, H., Nzayisenga, L., Munguti, J., Joselin Benoit Gnonlonfin, G., Kigadye, E., Okoth, S., 2017. Mycoflora and mycotoxins in finished fish feed and feed ingredients from smallholder farms in East Africa. Egypt. J. Aquat. Res. 43, 169–176. doi:10.1016/j.ejar.2017.07.001

Okoth S.A. and Kola M., 2012. Market samples as a source of chronic aflatoxin exposure in Kenya. African Journal of Health Sciences, 20:56-61

Okoth, S.A. and Ohingo M., June 2004. Dietary aflatoxin exposure and impaired growth in young children from Kisumu District, Kenya: Cross sectional study. African Journal of Health Sciences, 11 : 43 – 54.

Okoth S., Rose LJ., Ouko A., Netshifhefhe NEI., Sila H., Viljeon A., 2017. Assessing Genotype-By-Environment Interactions in Aspergillus Ear Rot and Pre-Harvest Aflatoxin Accumulation in Maize Inbred Lines. Agronomy 7, 86. https://doi:10.3390/agro, LJ., Ouko, A., Beukes I., Sila H, Mouton M., Flett BC., Makumbi D. and Viljoen A., 2017. Field evaluation of resistance to aflatoxin accumulation in maize inbred lines in Kenya and South Africa. Journal of Crop Improvement, 31:6, 862-878, DOI: 10.1080/15427528.2017.1391915

Olotu IA., Njobeh PG., Obadina A., Chilaka CA., Okoth S., De Boevre M., De Saeger S., 2017. Awareness and Prevalence of Mycotoxin Contamination in Selected Nigerian Fermented Foods. Toxins 9, 363. DOI:10.3390/toxins9110363

Rose, LJ., Okoth S., Beukes I., Mouton M., Flett BC., Makumbi D. and Viljoen A., 2017. Determining resistance to Fusarium verticillioides and fumonisin accumulation in maize inbred lines resistant to Aspergillus flavus and aflatoxins. Euphytica, 213 (4): 93.

Okoth, S; Nyongesa, B.; Ayugi V.; Kang’ethe E.; Korhonen H.; Joutsjoki V. 2012. Toxigenic potential of Aspergillus species occurring on maize kernels from two agro-ecological Zones in Kenya. Toxins 4: 991-1007


Okoth, S., Rose