“The time has come to give up the fiction that COVID vaccines remain a necessary tool to promote public health,” he said.
The 20-year-old withdrew from Tuesday's Eisenhower Cup after pulling out of last week's ATX Open due to tonsillitis.
The 22-time Grand Slam champion tweeted about his withdrawals, which were anticipated but continue to raise doubts about when he will be able to play again.
Djokovic is unlikely to play but is still added to the provisional Entry List because vaccine mandates won't end until May despite calls to do so.
The injury blow will affect his build-up up to the next Grand Slam of the year - the French Open. The Roland Garros takes place from May 22nd to June 5th.
The Spaniard said that he felt a lot of pain during the match and had a hard time breathing and that the pain made him feel dizzy.
The win meant that Swiatek had won 11 consecutive matches and climbed up the ladder to second place in the world rankings.
The 24-year-old was overcome with emotion at the end of the game and it was pretty evident that he viewed the victory as the biggest of his career so far.
The three-time BNP Paribas Open champion beat his fellow Spaniard 6-4, 4-6, 6-3 to reach his fifth final in the California desert.
On Monday, the home favourite will face Rafael Nadal of Spain in arguably the most important match of his career.