Some passengers aboard the Norwegian Joy cruise ship reported minor medical complaints and were treated by Los Angeles Fire Department paramedics after the ship docked at the San Pedro port early Sunday.

This is the second time passengers of that cruise line are offered medical assistance in a week.

According to LAFD, some patients on a Mexican Riviera cruise sought assistance following medical complaints. But none were taken to hospitals. The cause of the illness is not clear.

According to cruise news, the treatment for 20 patients “reporting unspecified illness” had been given as soon as the cruise ship docked. The ship has a capacity for more than 3,600 guests, per Norwegian Cruise Line.

In a statement, the cruise line said: “During Norwegian Joy's Mexican Riviera sailing, a few guests onboard experienced a stomach-related illness.” 

“To mitigate any impact of this rare occurrence, we implemented stringent sanitation procedures. As always, we will continue to monitor this situation,” it said.

Norwegian Joy had a similar incident last week when some passengers traveling on cruise deals had to be treated for stomach flu symptoms on arrival from a Panama Canal voyage, per CNN report.

According to police sources, those passengers who arrived in the Port of Los Angeles on November 24 had shown infection from Norovirus, which the U.S.Centers for Disease Control and Prevention attributed (CDC) to diarrhea.

Norovirus causes diarrhea, vomiting, nausea and stomach pain.

Norwegian Cruise enforced special cleaning and disinfection procedures in response to the episode, the CDC said.

New ship cruise Norwegian Encore launched

Meanwhile, Norwegian’s newest ship, Norwegian Encore was launched in Miami. The Encore began its weeklong night Eastern Caribbean itineraries on Sunday.

In April 2020, the ship will move to New York City, and Western Caribbean voyages will be in fall 2020 from Miami.

Built-in Germany, the Encore is the biggest ship in Norwegian’s fleet and can carry 5,000 guests, per Fox news.

The attractions of Norwegian Encore include so many dining venues, waterfront dining experiences, a racetrack, a virtual galaxy pavilion, a laser tag course, and adventurous water slides. The vessel also has a Las Vagas-type casino.  GettyImages-Cruise Ship The Norwegian Cruise Line, Norwegian Sky cruise ship sails out of its port on October 12, 2018 in Miami Beach, Florida. Photo: Photo by Gary Hershorn/Getty Images

Complimentary dining choices will be attractive to cruise lovers which include dining rooms with changing menus and buffet restaurant-“The Garden Café.” 

Another highlight is the presence of a famous Italian restaurant, Onda by Scarpetta aboard the Encore, the first time in any ship.

In terms of organizational changes, Andy Stuart, president, and CEO of Norwegian Cruise Line will retire by the end of December and Harry Sommer, current president, International for Norwegian Cruise Line Holdings will take over.