The sneezing is probably Myco--I would just keep them warm and clean and keep an eye on it. If it doesn't clear up reasonably soon, perhaps some antibiotics (the tetracycline couldn't hurt, IMO), in case a secondary infection has developed.
All rats and mice carry Mycoplasma, unless they're delivered via caesarian section in a lab. Seriously. It often eventually kills them, but in the meantime, it causes bouts of respiratory symptoms. There is no cure.
Reply With Quote