A study by the Kenya Medical Research Institute (KEMRI) and researchers from Jomo Kenyatta University of Agriculture and Technology (JKUAT) has revealed that the Sh20 coin and the Sh50 note are the most contaminated denominations in the country.
According to the study that was presented at the 7th East African Health and Scientific Conference in Tanzania early this year, Sh20 coins and Sh50 notes had various disease-causing organisms due to their wide circulation.