Figure 4

IgG antibody responses to recombinant PvCSP using protein microarrays. (A) Probing rCSP with sera from vivax or falciparum malaria patients and from healthy individuals. Each circle indicates the data from individual serum analysed. The bar indicates mean value plus standard deviations. The p value was calculated by Student’s t- test. (B) Forty nine known parasitaemia samples were analysed the correlation between the antibody reactivity against rPvCSP and parasitaemia of vivax sample. Correlations were evaluated using Spearman’s correlation test. Mean intensity > 10000 seen as high intensity, and > 0.2 seen as high parasitaemia.