Several guests and crew (mostly asymptomatic ) were diagnosed.
ABC News reports that the Ruby Princess arrived in the port of San Francisco after a 15-day Panama Canal cruise on Monday with Covid-19 cases on board.
Princess issued a statement that read, "As with all Princess itineraries, this cruise is operated as a vaccinated cruise, as defined by the Centers for Disease Control and Prevention. Guests and crew vaccination rates were at 100%. We identified some positive COVID-19 cases amongst our guests and crew members during the cruise. They were all asymptomatic or only mildly symptomatic and were isolated and quarantined while monitored and cared for by our shipboard Medical team."
A spokesperson for Princess would not disclose how many guests and staff tested positive but said all the cases were either mild or asymptomatic.
The cruise line said guests who tested positive and did not complete the isolation period by the time the ship docked would "either return home via private transportation or were provided with accommodations ashore to hotels coordinated in advance for isolation and quarantine."
Later on Sunday, the ship departed on its following voyage, a 15-day cruise to Hawaii, the spokesperson said.