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African Women Living with HIV Have an Effective Option to Prevent Malaria During Pregnancy

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Pregnant women are particularly vulnerable to malaria infection. Hence the recommendation to offer preventive treatment (IPTp) based on sulphadoxine and pyrimethamine (SP) to pregnant women living in malaria-endemic areas. The problem is that these drugs are incompatible with co-trimoxazole (CTX), an antibiotic given to people with HIV to prevent bacterial infections.

“This means that the population most vulnerable to malaria infection and its consequences, namely pregnant women living with HIV, are also the least protected,” explained ISGlobal researcher Raquel González, technical coordinator of the MAMAH project, led by Clara Menéndez, director of ISGlobal’s Maternal, Child and Reproductive Health Initiative.

The aim of the project was to evaluate the safety and efficacy of two other drugs, dihydroartemisinin and piperaquine (DHA-PPQ), to prevent malaria during pregnancy in women living with HIV. The research team conducted the trial inGabon and Mozambiquewith more than 600 pregnant women taking CTX in addition to antiretroviral treatment for HIV. One group of pregnant women received DHA-PPQ and the other group received a placebo.

Although there was no significant difference in malaria infection at the time of delivery, women in the DHA-PPQ group had a significantly lower risk of developing clinical malaria throughout pregnancy (almost eight times lower than the placebo group) and also a lower risk (almost half) of becoming infected. DHA-PPQ was effective in women taking different antiretroviral treatments. No serious side effects were observed, and DHA-PPQ had no effect on mother-to-child transmission of HIV.

“We show that preventive treatment with DHA-PPQ is effective even in low malaria transmission settings,” said Gonzalez. “Adding this strategy to malaria control tools could significantly improve the health of thousands of mothers and their babies, especially in sub-Saharan Africa, a region where an estimated one million women living with HIV are infected with malaria during pregnancy every year,” she added.

“We congratulate the MAMAH team on these important results in the field of malaria research, and, in particular, in providing better health to pregnant women living with HIV in malaria-endemic areas,” added Montserrat Blázquez-Domingo, EDCTP Senior Project Officer. “This study underlines the value of collaborative research that EDCTP supports and our focus on priority infectious disease affecting sub-Saharan Africa in populations often excluded from clinical trials – such as pregnant women.”

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