FIGURE 2.

Trypanosome infection caused anemia in infected cows (A–D). The relation between T. congolense parasitemia and change in PCV. Right Y-axis black dotted graph is the change in parasitemia (number of trypanosomes/ml blood) from pre-infection (day 0) to 20 days post-infection. (>10 trypanosomes per field is equivalent to ∼ > 5 × 10⁵ trypanosomes/ml blood; and 1–10 trypanosome per field is equivalent to ∼10⁴ 5 × 10⁵ trypanosomes/ml blood). Left Y-axis the red-dotted line is the measure of Packed Cell Volume (PCV) recorded as a percentage of total blood volume, it measures the level of anemia from pre-infection (day 0) to 20 days post-infection. PCV < 25 considered anemic.