Prevalence and Risk Factors for Plasmodium Falciparum Malaria among Pregnant Women Attending the Antenatal Clinic at Bor State Hospital, South Sudan

In many parts of sub-Saharan Africa, a microscopic parasite called Plasmodium falciparum causes malaria, a disease that remains a persistent threat to public health. This parasite is transmitted through the bite of an infected mosquito and is particularly dangerous for pregnant women. During pregnancy, a woman's immune system undergoes natural changes that make her more susceptible to infection, and the parasite can hide in the placenta, the organ that feeds the developing baby. This hidden infection can lead to severe anemia in the mother and cause the baby to be born with low birth weight or even die before birth. While doctors know that preventing malaria is crucial for the safety of both mother and child, the specific risks and the true scale of the problem vary greatly depending on where a woman lives, her access to healthcare, and her personal circumstances. In regions affected by conflict and limited resources, such as South Sudan, local data is often scarce, making it difficult to design the most effective protection strategies.

To fill this gap in knowledge, researchers recently traveled to Bor State Hospital in South Sudan to investigate the current situation among pregnant women seeking care. The hospital serves as a major referral center for the region, drawing patients from both the town of Bor and the surrounding rural communities. The team, led by Angeth Achiek Kut from Makerere University, set out to determine exactly how many pregnant women were carrying the malaria parasite and to identify which factors made them more likely to be infected. They recruited 249 women who were visiting the antenatal clinic, a place where expectant mothers go for check-ups during pregnancy. Each participant agreed to a blood test and answered questions about their life, their education, their home environment, and the health services they had received. The researchers used two methods to check for malaria: a rapid test that detects a specific protein from the parasite and a microscope examination of stained blood slides, which served as the most reliable standard for diagnosis.

The results revealed a startlingly high burden of disease. Out of the 249 women tested, 107 were found to have active malaria infections, meaning that nearly 43 percent of the pregnant women attending the clinic were carrying the parasite. This rate was significantly higher than what has been reported in some other studies within the country, suggesting that the transmission of malaria in this specific area remains intense. The researchers then looked closely at the lives of these women to understand why some were infected while others were not. They found that the risk was not distributed equally. Women who had never attended school were far more likely to be infected than those with higher levels of education. Similarly, women living in rural areas faced a much higher risk than those living in the town. The data also showed that women who were pregnant for the first time were at greater risk than those who had been pregnant many times before, a pattern that aligns with the biological reality that the body builds up specific defenses against malaria only after repeated exposure.

The study also highlighted the critical role of healthcare access and preventive measures. Women who had visited the antenatal clinic only one to three times during their pregnancy were much more likely to have malaria than those who had visited seven or more times. This suggests that frequent contact with health workers provides essential opportunities for testing and treatment. Conversely, the use of protective tools proved to be highly effective. Women who slept under long-lasting insecticidal nets, which are bed nets treated with a safe insecticide that kills mosquitoes, were significantly less likely to be infected. The same was true for women who received intermittent preventive treatment, a course of medication given during pregnancy specifically to clear any parasites before they could cause harm. These two measures, the nets and the medication, were the strongest factors linked to a lower chance of infection.

The researchers concluded that the high prevalence of malaria in this group is driven by a combination of social and biological factors. Being uneducated, living in a remote rural area, being pregnant for the first time, and having fewer visits to the doctor all increased the odds of infection. On the other hand, using a treated bed net and taking preventive medication significantly lowered those odds. The study does not claim to have solved the problem, but it provides a clear map of where the risks lie. It suggests that to protect pregnant women in this region, health efforts must go beyond simply treating sick patients. Instead, they need to focus on ensuring that women, especially those with little formal education and those living in remote villages, can easily access antenatal care, receive their preventive medicines, and obtain insecticide-treated nets. By strengthening these specific areas of care, health workers can better shield mothers and their unborn children from a disease that continues to pose a severe threat.