The Carnival Vista departed from Galveston, Texas headed to Belize. 26 crew members and one passenger tested positive for COVID-19.
All 27 were vaccinated, had mild or no symptoms, and were in isolation, according a statement from the Belize Tourism Board. The tourism board said 99.98% of the ship’s crew was vaccinated, as well as 96.5% of its passengers. So who were the 3.5 passengers who were not vaccinated?
Carnival announced last week that there were positive cases on board, but the cruise line did not not give specific numbers. Cruise ships are often settings for disease outbreaks because of their closed environment and close contact between travelers from many countries, according to the CDC.
At the beginning of the pandemic the Diamond Princess was quarantined off Japan. Of the 3711 people onboard, around 700 were eventually infected with the virus (567 out of 2,666 passengers and 145 out of 1,045 crew) and 9 people, all of them passengers, died. Quarantine on a cruise ship is dangerous, because the cruise ship does not use HEPA filters which can effectively screen 99 percent of the particles. Airborne transmission likely accounted for over 50% of disease transmission on the Diamond Princess cruise ship, which includes inhalation of aerosols during close contact as well as longer range. The CDC issued an advisory to avoid traveling on Cruise ships. The cruising industry came to a screeching halt in mid March of 2020.
The CDC’s no-sail order to expired on October 31, 2020. Cruise lines, including Norwegian, Royal Caribbean and Carnival began November 2020 by announcing they would cancel North American sailings through December 31, 2020. With the advent of the vaccines, there was hope that 2021 would see the return of care free cruising. No one was prepared for the Delta variant. The cruising industry has to choose between passenger safety or profit and of course profit always wins.