Fig 2. Two-component cluster mixture model fit for weighted HPgV viral load from healthy blood donors and co-infected ART-naïve patients.

Density distribution (bars) of HPgV viral load (log₁₀ genome equivalents) from healthy blood donors (A) and co-infected ART-naïve patients (B). Gaussian curves indicate the fitted low (red line), high (green line), mean component curves (μ), the number of patients (n) and proportion (λ) in each population component. The clusters’ cut-off point for healthy blood donors (A) and co-infected ART-naïve patients (B), is the intersection of the curves.