Hamsters generally don't carry the plague virus, especially those kept as pets at home. The plague is a severe infectious disease caused by Yersinia pestis, which mainly spreads among wild rodents such as marmots and ground squirrels. As pets, hamsters usually live in a captive - bred environment and have very few opportunities to come into contact with wild rats outside. Therefore, the chance of them getting infected with the plague is extremely low.

Conditions for Hamsters to Be Infected with the Plague
Environmental Hygiene: Pet hamsters living in a clean, dry, and well - ventilated environment have a lower chance of getting infected with the plague. Conversely, a poor environment will increase the risk of infection.
Contact History: If a hamster has come into contact with animals or items that may carry the plague bacteria, the likelihood of it carrying the plague increases.
Purchase Channel: Hamsters bought from regular farms with good hygiene conditions have a lower probability of carrying the plague, while those from unknown sources pose an increased risk.
Preventive Measures
Maintain Hygiene: Regularly clean and disinfect hamsters and their living areas, and avoid contact with wild animals.
Environmental Control: Ensure that the hamster's living environment is clean and hygienic, and avoid poor conditions.
Avoid Contact: Refrain from coming into contact with animals or items that may carry the plague bacteria.
By taking the above measures, the risk of hamsters getting infected with the plague can be effectively reduced, ensuring the health and safety of pet hamsters.