GSTM1 and anemia (phenotype): The analysis included 2,187 admissions with Hb less than 10 g dl−1 aged 1–59 months residing in Busia County for the period January 2020 – July 2023: 1,151 (52.6%) were classified as mild anaemia, 402 (18.4%) as moderate anaemia and 634 (29.0%) as severe anaemia.