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    Why Norovirus Crops Up on Cruises

    It has not been the best season for cruise ships. By the time the Explorer of the Seas docked at Bayonne, N.J., late last month, more than 600 passengers and crew members were sick to their stomachs; the Caribbean Princess arrived in Houston the same day after an outbreak sickened at least 192 people onboard.

    Over the past five years, an average of about 14 cruise ships a year have had outbreaks of diarrheal illness, and the culprit is almost always norovirus, as it was on these two ships.

    So if you go on a cruise, are you putting yourself at risk for this illness? Well, not exactly, but the answer is complicated.

    Norovirus infects 20 million Americans a year, according to the Centers for Disease Control and Prevention, thriving in closed areas like dormitories, summer camp cabins, health care facilities and other places in addition to cruise ships. It spreads through contaminated food or water or by contact with contaminated surfaces. In addition to loose stool and vomiting, it can cause weakness, muscle aches, headache and fever. There is no treatment, and most people recover in a few days.

    The best way to avoid it is prevention, and the best prevention is hand washing. The agency recommends that cruise ship passengers wash before eating or any other action that involves bringing hands near the mouth. And it recommends washing your hands after using the toilet, changing a baby’s diaper and coming into contact with communal features like railings.

    Though cruise outbreaks make news, Jan Vinjé, head of the National Calicivirus Laboratory at the Centers for Disease Control and Prevention, said that widespread illness occurs on only about 1 in 200 voyages. The cause is not necessarily cruise line maintenance. “The food served on ships is usually of excellent quality, and food preparers are well trained,” Dr. Vinjé said. And when illness appears, he added, crews clean quickly and effectively. The problem, he said, is passengers. “If Grandma is sick when she gets on, she’s going on the cruise anyway,” Dr. Vinjé said. “And that’s how the virus gets onboard. Then it lands on handrails and doorknobs, and the transmission continues.”

    Dr. Philip C. Carling, a clinical professor of medicine at Boston University, said that regardless of the origin, once onboard, the illness spreads widely. He says the reason is failure to clean restrooms properly. In a study published in Clinical Infectious Diseases in 2009, he marked toilet seats, flush handles and other objects in restrooms on cruise ships with an easily removed substance, visible only under ultraviolet light. Then examiners returned the next day to see if the substance had been wiped away. Only 37 percent of the 8,344 objects marked were cleaned daily. On three ships that had baby-changing tables, none were cleaned at all during the three-year study period.

    “Of course they’ve been doing a good job with food,” Dr. Carling said. “And if a person vomits, they soak everything in bleach. But they’re not doing any routine examination of cleaning processes.”

    The C.D.C. does inspect ships but not every changing table or bathroom even. “We inspect some bathrooms, and we don’t inspect for norovirus,” said Bernadette Burden, an agency spokeswoman.

    Its inspection reports typically cite ships for inadequate chlorine in swimming pools, food stored at the wrong temperature, dirty cookware and other problems that could provide a breeding ground for the virus. The C.D.C. did 231 inspections and issued 17 failures — scores of 85 or less on a 100-point scale. The inspectors awarded perfect scores of 100 to 27 ships, and most others scored in the mid- or high 90s.

    Explorer of the Seas has been inspected twice a year since 2001, and has never failed, although it reported one previous outbreak in the past five years. In July 2013, its latest inspection, there were a few minor violations, but it received a 98. Its operator, Royal Caribbean, has reported five outbreaks in the past five years on other ships. The Caribbean Princess has been checked 18 times since 2004, with 12 perfect scores of 100, and a 98 on its last inspection in September 2013. Still, it reported an outbreak in 2008, and its operator, Princess Cruises, has reported eight outbreaks in the past two years on its ships.

    If it helps put your mind at ease on your next excursion, bear in mind that cruise lines do their best to avoid outbreaks, and the unflattering attention that they can bring. Michael McGarry, senior vice president at Cruise Lines International Association, an industry trade group, said that cruise companies take careful steps to control illness, including asking passengers as they board if they are or have recently been sick, sanitizing frequently touched surfaces, and implementing response plans in case of illness.

    By Nicholas Bakalar, New York Times

    For more cruise news & articles go to http://www.cruisecrazies.com/index.html

    Re-posted on CruiseCrazies.com - Cruise News, Articles, Forums, Packing List, Ship Tracker, and more


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    Actually noro virus was first noted at a a school in Norwalk Conn. and so it was a land based illness and not a cruise ship illness as many seem to think.

    I had it on the Connie in 2010 and it was traced to passengers returning from Jerusalem. While we were there I saw so many people touching religious artifacts and sites like the tomb of Jesus, the slab he was laid on after crucifixion and so on. I even saw people kissing some of these artifacts so its no wonder noro spread back to the ship.

    Its very interesting to see that its not the food service thats to blame, its the bathrooms and other public places. Good to note. For our upcoming cruise I will bring disinfectants to clean the br myself.

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