How many diseases can be caught from fleas?

Fleas can transmit several diseases to humans and pets, with the most notable being Bubonic Plague, typhus, and cat scratch fever. They can also spread tapeworms and cause allergic reactions in sensitive individuals. The exact number of diseases linked to fleas varies depending on geographic region and environmental factors, but there are at least a handful of significant illnesses associated with these parasites. Overall, while not all fleas carry diseases, their potential as vectors makes them a concern for public health.