Viruses broke out on luxury cruise ships in more than 2,000 people in the United States! Hundreds of people were infected in closed space

　　On October 3, it was urgently reported by overseas media. The "Serenade of the Seas", a subsidiary of the Royal Caribbean Cruise Company, broke out in the norovirus outbreak during its voyage from September 19 to October 2. According to reports, nearly 100 people were infected on the ship, and the actual cases may be more, and the concealment of closed space information is even more unconfirmed.

As of October 1, 94 of the 1,874 passengers on the ship had typical norovirus symptoms such as diarrhea and vomiting, and 4 of the 883 crew members were infected.

　　Norovirus is highly resistant to alcohol and common detergents, and is also extremely contagious. It only requires 18 virus particles to cause infection. Patients usually have symptoms within 12-48 hours after infection, and can heal themselves within 1-3 days, but the detoxification period can last for more than 2 weeks.

　This cruise ship departs from San Diego, California, and passes through ports in many countries such as Mexico, Costa Rica, Panama and Colombia.

　　The epidemic reached the 2% notification threshold (about 55 cases) stipulated by the US Centers for Disease Control and Prevention (CDC) as early as September 28 (the 9th day of the voyage), but passengers reported that the actual number of infections may be greater, and some people concealed their symptoms because they were worried about being quarantined.

As a densely populated enclosed space, cruise ships may become virus carriers.

　　In July this year, another Royal Caribbean cruise ship, "Ocean Pioneer", broke out in a similar epidemic, most of the 141 infected people were infected through contact with contaminated surfaces.

　　In addition, some passengers chose to take their own medicine or conceal their symptoms because they were worried about being quarantined, causing the virus to continue to spread without their knowledge.

An anonymous passenger revealed that at least 15 people on his floor had vomited, but only 3 people reported to the ship. This behavior not only increased the risk of infection for other passengers, but also interfered with the ship's epidemic control measures.