While it is possible to get worms from raw meat, considering you feed frozen meats, its more likely your dog is getting worms from another source, such as rabbit poop or fleas.
Best thing to do is make sure your dog doesn't eat animal feces outside and is on some sort of preventative for fleas.
Worms happen. I give my dogs a heart worm preventative that also does round worm. I check their feces for tapeworms as well as use a topical on them during flea season. There may be more natural ways to prevent fleas and ticks but since I am in a high tick area, I have to use topicals.
I would not stop feeding raw.
Best thing to do is make sure your dog doesn't eat animal feces outside and is on some sort of preventative for fleas.
Worms happen. I give my dogs a heart worm preventative that also does round worm. I check their feces for tapeworms as well as use a topical on them during flea season. There may be more natural ways to prevent fleas and ticks but since I am in a high tick area, I have to use topicals.
I would not stop feeding raw.