Responding agents found the group tried to make their way to the beach at Border Field State Park in San Diego and also located a woman who was unresponsive.
The training course was being conducted by the Real Life school. Altinopolis mayor José Roberto Ferracin Marques said no one in the local municipality had been informed.
Psaki, 42, had taken both the doses of the vaccine but still contracted the virus, making her the most visible member of the Biden administration to test positive.