Duration of Protection against Malaria and Anaemia Provided by Intermittent Preventive Treatment in Infants in Navrongo, Ghana (original) (raw)
Figure 6
Effect of parasitaemia on protective efficacy following IPT.
Protective efficacy against clinical malaria (history of fever or temperature ≥37.5°C plus malaria parasites detected on a blood smear) with time in children aparasitaemic (A) and parasitaemic (B) at time of IPT. Error bars indicate 95% CIs. PE estimates are for all IPT doses combined; all episodes that occurred before two years of age after an IPT dose at which a blood slide was taken were included. No long term protection was observed; for brevity estimates are presented up to twenty weeks following treatment. Incidence in weeks 13–16 and 17–20 was aggregated; data points are shown at the midpoint of each interval. For clarity of presentation the y-axis is truncated at −100%.