Can fleas be spread from human to human?

No, fleas are not usually spread from human to human. Fleas typically require a host animal, such as a dog or cat, to survive and reproduce. While it is possible for fleas to temporarily infest a human, they do not generally establish long-term populations on humans. Instead, they prefer the warmth and fur of animals as their primary hosts. Therefore, flea infestations are more commonly associated with pets or other animals rather than directly transmitted between humans.