During pregnancy, women need to take special care to avoid becoming ill. There are several reasons for this. The first is that a pregnant woman’s immune system is not as strong during pregnancy as it generally is; this helps to prevent the mother’s body from attacking the developing fetus. Unfortunately, however, the weakened immune system also means that pregnant mothers are more susceptible to pathogens that they’d otherwise fight off relatively easily. Increased susceptibility aside, there’s also the concern that some illnesses — influenza included — can impact the developing fetus. Finally, there’s the simple fact that many of the medications used to treat illnesses and their accompanying symptoms aren’t appropriate for pregnant women.