Upvote:16
The proclamation remains in effect until the president says otherwise:
Sec. 4. Termination. This proclamation shall remain in effect until terminated by the President. The Secretary of Health and Human Services shall recommend that the President continue, modify, or terminate this proclamation as described in section 5 of Proclamation 9984, as amended.
A period of thirty days was discussed when the original proclamation was made, but it doesn't appear in the actual document. In any case, I'd be very surprised if it wasn't extended.