Hook worms are very bad and you'll have to get rid of everything and set up a hospital setup. Contact MrZoggs on here. He is treating frogs for hookworms and can tell you exactly what you'll need to do tank wise. I've never dealt with them, but they're a nasty parasite and hard to get rid of.

You'll have to disinfect the enclosure daily with a 10% bleach solution.

The Vet should be able to tell you eat to do though.