Figure 2From: Association of sub-microscopic malaria parasite carriage with transmission intensity in north-eastern TanzaniaRelationship between village level parasite rate by microscopy and PCR, multiplicity of infection and altitude Malaria prevalence by microscopy (open circles) and by PCR (closed squares) is plotted on Y1 axis. The mean number of clones per infection (closed triangles) is plotted on Y2 axis. R2 values are 0.69, 0.59 & 0.56 for microscopy and PCR, multiplicity of infection respectively.Back to article page