Not in the grand scheme of things but as with most things it is relative to your horse and personal circumstances (yard size, horse management, shared field, field management, previous worming programme etc etc!)
Whomever did the worm egg count should have given you a full answer and worming programme designed for you and your horse-if not then speak to your vet.
Although not common knowledge we do know an awful lot about parasites and how to treat them! ;-)
At this time of year if you haven't treated against tapeworms then that is due, also encysted redworm larvae.
