sorry - I seem to have missed this.
After the last lump falls off, if the skin underneath is healthy, really the bun usually is all clear.
The only problem that might remain is if they have had nasal scarring or nasal congestion (i am taking it that lungs were not affected?)
One the last lumps were off Viola Rose, and we saw that the skin underneath was healthy, we stopped all meds other than those for her nasal congestion that she still had .
they tend to still have 'scars' for ever afterwards if the lumps were bad - Damson stil had scars 6 years on!
My vets say that after having myxi the bun will be immune for about a year - I usually wait at least 6 mths before giving them another myxi vac.
If they are due their VHD jabs I am not sure what to do as obviously need to be healthy to have them.
It might be an idea to continue giving something like ACE (high vitamin supplement powder) on the food t help the immune system and healing skin.
You can also use tea tree ointment for the skin if it looks red and sore.