Correlation between aflatoxin M1 content of breast milk, dietary exposure to aflatoxin B1 and socioeconomic status of lactating mothers in Ogun State, Nigeria

► Degree of contamination by AF B1 and AF M1 of lactating mothers was low in Ogun State. ► There was a higher occurrence of AF B1 contamination in Ogun East Senatorial district. ► 18% of the breast milk had AF M1 below the detectable limit, while 16% exceeded it. ► The socioeconomic status of the mothers significantly influenced aflatoxin contamination. ► There was a correlation between AF M1, AF B1 and socioeconomic status of the mothers.