Unfortunately, treatment is not effective in severe cases of pneumonia. Hamsters with mild cases of pneumonia, meanwhile, respond well to treatment, though this typically involves treating the signs rather than the condition itself. For example, oxygen therapy may be administered to help the animal breathe easier. However, if the pneumonia is caused by a bacterial infection, your veterinarian will likely prescribe long-term antibiotics.
It is vital that you remove any pneumonic hamsters from the healthy animals to prevent the spread of infection. Keep those that are infected in a calm and clean area so that they may rest. Avoid overcrowding the cages and keep them warm, dry, and free of soiled bedding material.