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Wazine has to be repeated; it only kills adults, not larvael worms.  So repeat it or use a stronger wormer with more broad spectrum effects like ivermectin (pour-on for cattle, 1% injectable used orally, or horse paste) or fenbendazole (cattle/horse paste tube) to get all the ones you left behind.
Incidentally, Poultry Protector is an enzyme which cleans off mite eggs but doesn't treat an infestation of mites.  (I read the label carefully as I saw it claiming to treat multiple unrelated things.)  It's good for what it's good for, but if you have mites or lice then you should use a PERmethrin poultry dust.  It's usually literally called "poultry dust" on the label, but read the active ingredients.  You want permethrin, not sevin dust or pyrethrins.  Check the bird at night as mites will not stay on the bird all the time - only at night, only when feeding.  Both mites and lice like the warm/moist areas of the body like under the wings, around the vent,a t the back of the neck.  You might not find bugs but might find the eggs of the louse, "nits", clustered around feather bases.  Check him thoroughly to rule this out.  Let us know if you find anything.  
Are you continuing the duramycin?  (By the way, I completely agree with PurpleChicken and in fact using antibiotics like this is one of the reasons that duramycin on its own is not likely to treat many things any more. Unfortunately.  But of course, that's what The Feed Store Guy always recommends first.  Again, unfortunately.
I'd definitely worm again, make sure he's hydrated and drinking.  I'd recommend a poultry-specific electrolyte solution over a human based one because of the differing sodium requirements.    Or even consider ordering a supplement like Aviacharge which is highly recommended by some poultry men (and women).  It's balanced for chickens' needs.
And I agree with not worming til the antibiotics are done.
In all cases (because you're giving an antibiotic and because you're about to worm) I would use a non- yogurt probiotic.  (You can't use yogurt while using a -mycin or -cycline drug - it deactivates it.)  That means either Probios from the feed store (the powder or paste), or acidophilis capsules from the  grocer/drug store/health food store's vitamin section.  Either way, despite labeling, use in a quickly eaten treat - not in the water.  I like to use mine in some boiled mashed egg yolk - they   never know it's in there.  Where coccidiosis is ever suspected (or not ruled out anyway) I use cooked oatmeal as the carrier.
I'm very sorry for your lack of initial replies (I probably saw the post, but then saw the number of posts and that PurpleChicken had replied and figured you were taken care of).  But I'm glad you've had recent replies, and hope my advice helps as well.
Please let us know if you have any questions and, more importantly, how the big guy is doing.