I lost 2 to cocci over the summer in this old coop. I have repeatedly washed it with soap, water, new bedding per week, and a hose down often since the chickens moved out. Now there are no chickens living in it. But I will be adding two more hens to it later this month, and want to make sure there isn't cocci anymore. Yes, I know, all chickens carry some cocci in them, but I'm talking about the disease amount. Also, is there a cocci vaccination? Thank you!
It hasn't--cocci stays in the soil for ages and is present most if not all places. There is a cocci vac, but I think it's only for chicks...not really sure though. I think your best bet is to have some Corid on hand so if you see signs of a cocci outbreak you can start treatment right away. As you know, it can kill quickly--but birds respond well to treatment and when it's started at onset most will recover. Good luck!!
Sounds like you've worked hard to clean it out, just be sure it is nice and dry, dry, dry after all that washing.
In addition to having Corid/sulmet/whatever on hand so you can jump on any problems promptly, also do your utmost to keep things DRY in the coop. Rig waterer so it won't spill/leak, fix any ways that rain can seep or blow in, change bedding perhaps more often than you would otherwise (post-coccidiosis-outbreak would NOT be a good time to dabble in composting-style deep litter methods ), that sort of thing. Good luck, have fun, Pat
...and using some food-grade DE in the bedding helps to keep bedding dry. Stable Boy and other horse products work well, too. But all products and bedding work best when bone dry, so anything you can do to keep it that way will keep the cocci- from activating. https://www.backyardchickens.com/web/viewblog.php?id=7693-Coop_Hygiene
