Table 1.

Study Population

Country, Town	Malaria Status	Participants, No.	Sex, M:F
Colombia
Puerto Libertador	Exposed to P. falciparum and P. vivax	156a	154:2b
Medellín	No exposure	50	25:25
Brazil
Rio Pardo	Exposed to P. vivax	41	41:0
Belo Horizonte	No exposure	10	4:6
Canada
Edmonton	No exposure	21	5:16

Abbreviations: P. falciparum, Plasmodium falciparum; P. vivax, Plasmodium vivax.

^aIncludes 9 men and children whose sera were used for affinity purification.

^bFemales were ≤12 years old.