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Safety evaluation of SPF66 malaria vaccine in Brazil

The frequency and description of side effects secondaiy to the subcutaneous application of SPf66 malaria vaccine and placebo are reported for each dose of application in the participants of the vaccine efficacy trial in Brazil. Side effects evaluated two hours after each application were detected in 8.0%, 30.2% and 8.8%, for the Is', and 3"' dose, respectively, in the SPf66group, and in 7.0%, 8.5% and 2.9% in the placebo group. Local reactions such as mild inflammation, nodule and pain or erythema frequently accompanied by pruritus were the most common reactions detected in both groups (3-8%, 29.1% and 8.5% in the SPf66 group and 4.0%, 7.6% and 2.5% in the placebo group). Among vaccinees, local side effects after the 2nd dose were more frequent in females. Systemic side effects were expressed mainly through general symptoms referred by the participants and were most frequent after the 1st dose in both groups (4.3% in the SPf66 group and 3-0% in the placebo group). Muscle aches and fever were refewred by few participants. No severe adverse reactions were detected for either dose of application or group.

Malaria vaccine; Vaccine safety; SPf66 efficacy trial


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