I don't think an average person (myself) could comprehend the kind of money tied up in that event, bar an outbreak of huge proportions, the games will happen.
I’m going to go out on a limb here and say they won’t be held. Even if there are limited infections lingering, every nation will be represented.
Many of which will probably be successful in having quarantined their borders up
to that point.
The Olympics would open every participating country up to potential infection.
By beggining of April the answer should
be clear.