Malaria is a serious disease that can be harmful to both the pregnant person and the developing fetus. Malaria infection during pregnancy can increase the risk of complications such as anemia, low birth weight, and preterm delivery. Therefore, it is important for pregnant people to take steps to prevent malaria, such as using insect repellent, wearing protective clothing, and taking antimalarial medication if recommended by a healthcare provider.

Regarding your wife's situation, it's important to speak with her healthcare provider about the specific malaria vaccine she received and any potential risks to the developing fetus. While some vaccines are considered safe during pregnancy, others may not be recommended due to a lack of safety data or potential risks.

As your specialist mentioned, it is difficult to determine the effects of the vaccine on a fetus in the early stages of pregnancy. However, it's important for your wife to continue to receive prenatal care and follow her doctor's recommendations. If she has any concerns or questions about the vaccine or her pregnancy, it's best to discuss them with her healthcare provider. They can provide personalized advice based on her medical history and current pregnancy status.