Malaria preventive therapy in pregnancy and its potential impact on immunity to malaria in an area of declining transmission.

Abstract:

BACKGROUND:Regular anti-malarial therapy in pregnancy, a pillar of malaria control, may affect malaria immunity, with therapeutic implications in regions of reducing transmission. METHODS:Plasma antibodies to leading vaccine candidate merozoite antigens and opsonizing antibodies to endothelial-binding and placental-binding infected erythrocytes were quantified in pregnant Melanesian women receiving sulfadoxine-pyrimethamine (SP) with chloroquine taken once, or three courses of SP with azithromycin. RESULTS:Malaria prevalence was low. Between enrolment and delivery, antibodies to recombinant antigens declined in both groups (p<0.0001). In contrast, median levels of opsonizing antibodies did not change, although levels for some individuals changed significantly. In multivariate analysis, the malaria prevention regimen did not influence antibody levels. CONCLUSION:Different preventive anti-malarial chemotherapy regimens used during pregnancy had limited impact on malarial-immunity in a low-transmission region of Papua New Guinea. TRIAL REGISTRATIONS:NCT01136850.

journal_name

Malar J

journal_title

Malaria journal

authors

Teo A,Hasang W,Randall LM,Unger HW,Siba PM,Mueller I,Brown GV,Rogerson SJ

doi

10.1186/s12936-015-0736-x

subject

Has Abstract

pub_date

2015-05-26 00:00:00

pages

215

issn

1475-2875

pii

10.1186/s12936-015-0736-x

journal_volume

14

pub_type

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