While it’s not the most likely scenario, it is technically possible for bed bugs to make you sick. Considering that they are parasites that feed on human blood, people who are anemic could be particularly affected by bed bugs, and children (especially children with anemia) could be more severely impacted by their bites. However, while they do bite and feed on human blood as mosquitos do, unlike mosquitos, bed bugs can’t fly and easily propagate diseases, which makes them unlikely sources of human-to-human disease contagion.