No don't take me to the vet

Sadly I think my Etienne needs to go to the vet again with the same problem it is a virus sort of like Gingivitis that gives him a very raw sore throat most of his teeth have been extracted only fangs left.
he is a sweet cat but I feel he has no future as this virus is always upon  him and of course stops him eating~~~~~~~~~~~~
he is my last cat left but I feel that soon I must say goodbye to him because this virus and the antibiotics are not working my heart is very sad.