Those are just the number of new cases that are known about. The real number is likely much higher. There are people walking around every day that don't even know they have it.
That's why everyone should wear a mask...because you could be carrying it and not be aware of it. You don't wear a mask to protect yourself...you wear a mask to protect others...and they wear the mask to protect you. And the sooner everyone starts to understand that...the sooner you will start seeing new cases go down instead of up.