Why don’t you post your question or discussion theme?
One of my professor is now in USA for research purposes in veterinary college university of Florida,I asked him common diesease of animals at USA he told me list.
The most common feline viral diesease
"Feline pan leukemia virus" n another one according to prevalance " feline immunodeficiency virus".
You have to isolate bacteria on media then test it with different antibacterial drugs