Nicholas had a beautiful, big, furry cat named Theodore (“Feodore” because Nick had trouble with “Th”) that he packed around, played with and cuddled. The cat was diagnosed with feline leukemia and put to sleep one year before Nick was diagnosed with acute lymphocyte leukemia.
It bothered Grandpa Len that we let our pets into the house, and especially that the kids let the cats up on their beds. He was horrified when Nick got sick, and certain that his grandson had caught leukemia from his cat.
No, a human cannot catch leukemia from a cat.
Leukemia in humans is a blood cancer. “Leuk” means “white” and “emia” means “blood”. No one knows why but something changes inside the cell, and it begins to insanely multiply within the bone marrow, spilling out into the periphery (blood stream), crowding out all the good cells.
People don’t pass leukemia to each other. In fact, the affected person has a weak immune system and has a high risk of catching something from you.
Feline Leukemia is something different because it is a virus and one cat can infect another. It is a form of blood cancer and causes the same symptoms as in humans. But it certainly cannot jump from the feline species to infect the human species.