Fig. 2

Rates of P. falciparum infection and clinical event rates in HEU and HUU children. A Relative risk of P. falciparum infection in HEU vs. HUU children between 6 and 24 months of age. P. falciparum infection detected by PCR. Relative risk less than one represents decreased risk in HEU children (point estimates and 95% confidence intervals displayed). B Differences in rates of clinical events in HEU vs. HUU children between birth and 24 months of age. Rate ratio less than one represents decreased rate in HEU children (point estimates and 95% confidence intervals displayed). URTI: upper respiratory tract infection