What is the most logical next event?

How to diagnose mousepox
Look for signs of sudden onset mousepox.
Sudden onset mousepox is the acute form of the disease, meaning that it comes on suddenly and forcefully. A mouse with acute mousepox will usually be hunched over, have swelling of the face, and have digestive distress, such as diarrhea.
These symptoms will appear and progress very quickly. In many cases the mouse will die quickly from the acute form of this disease.