The CDC estimate is an average of the total reported cases from their various sources. The high was 18,000.
The hospital ER rooms are getting over-run by people who are otherwise healthy. They have to get checked out based on their reported symptoms and a positive test. Hospitals have to check them out before they can send them home or else they face the prospects of litigation by failing to run a thorough examination on someone. There are people in hospitals who insist they can't breathe and their tests are showing they have 100% healthy lungs. This requires further testing and examination which further burdens our hospital staff and resources unnecesarily. This is actually happening and anyone who thinks this is isn't a serious problem is just burying their head in the sand.