Table 1.
Substance | No. of ‘acceptable’ samples analysed | Mean grams consumed daily | No. of ‘acceptable’ samples with helminths of risk to humans | No. of ‘rejected’ samples analysed | No. of ‘rejected’ samples with helminths of risk to humans |
---|---|---|---|---|---|
Ash | 1 | 14.9 | 0 | 1 | 0 |
Cement | 1 | 39.1 | 0 | 1 | 0 |
Charcoal | 5 | 7.5 | 1 | 5 | 0 |
Earth | |||||
Mchanga | 1 | 12.5 | 0 | 1 | 0 |
Udongo | 12 | 25.1 | 0 | 12 | 0 |
Ufue | 3 | 26.5 | 0 | 3 | 1 |
Vitango pepeta | 5 | 28.1 | 0 | 5 | 0 |
Whitewash | 1 | 5.0 | 0 | 2 | 0 |
Total | 29 | 1 | 30 | 1 |