Abstract
Purpose. The analysis of urine samples of school children had indicated not only a high frequency of detection of aflatoxins during both seasons (rainy and dry), but also high concentration levels of these toxins. This created the impetus to test the sera of the same cohort of school children for the presence of these toxins, which would serve as a further indication of exposure to these carcinogens.
Design. Analysis of the presence and quantity of aflatoxins and ochratoxins in serum samples of children from a single school.
Results. The serum samples contained 57% aflatoxins and 19% ochratoxin A. Boys had a higher exposure rate than girls, as well as a higher concentration level of toxins, in some instances. However, these differences were not significant. The exposure rates and levels according to the age of these children were also not significant.
Conclusions. Even though the exposure rates to aflatoxins and ochratoxin A were low compared with urine data from these children, the presence of these mycotoxins in sera is still a cause for concern.