Myxomatosis is a type of sickness that happens to rabbits. It's caused by a virus that can make the rabbits very sick and cause little bumps to appear on their faces and bodies. The virus is spread by flea bites or by touching things that have the virus on them.
When a rabbit gets myxomatosis, it can make them feel very tired, weak, and sad. They might not want to eat or drink, which can make them even sicker. Some rabbits can survive myxomatosis if they get treatment from a veterinarian, but others might not be able to recover.
The reason why humans might be interested in myxomatosis is because sometimes rabbits are used for food or as pets. If a lot of rabbits get sick with myxomatosis, it can affect the people who need the bunnies for food, or the people who love them as pets.