As of April 1, a covid test and the web-based Traveler's Health Declaration form (generating a QR code) are no longer required. Vaccination continues to be required.
I'm traveling tomorrow to Curitiba, and I was in a panic that the Traveler's Health Declaration website no longer exists. Then I found the statement from the Brazilian health authority and got it translated.
So I wasted time and money this morning getting a covid test. My airline recently gave me the wrong information and failed to correct it.