Thread: Why Do People Get a Norwalk Virus at Sea?

What Is the Norwalk Virus and How Can You Lessen Your Chances of Getting It?

By Linda Garrison, About.com Guide

The Norwalk virus or norovirus occasionally comes up in the news whenever a reportable number of cruise passengers (more than 2 percent of the total passengers) become ill with a "stomach flu", causing them to be very ill for one or two days. This virus can be very unpleasant, and the symptoms include stomach cramping, nausea, vomiting, and diarrhea. Some people even run a fever or have chills, and many report head or muscle aches. This ailment can certainly ruin a vacation! Let's take a look at the Norwalk virus (norovirus) and how you can takes steps to avoid this nasty disease.

What are Norwalk Viruses (Noroviruses)?
Noroviruses are a group of viruses that cause the "stomach flu", "stomach bug", or gastroenteritis in people. Although people often refer to noroviruses (or the Norwalk virus) as the "flu", the virus is not the influenza virus, and getting a flu shot will not prevent it. Sometimes a norovirus is referred to as food poisoning, but it is not always transmitted in food, and there are other types of food poisoning not in the norovirus family. The symptoms come on very suddenly, but the illness is very brief, usually only one to three days. Although the norovirus is very nasty while you have it, most people do not have adverse long-term health effects.

The Norwalk virus was named for Norwalk, Ohio, where there was an outbreak in the 1970's. Today, similar viruses are called noroviruses or Norwalk-like viruses. Whatever they are named, this stomach virus ranks second (behind the common cold) in the occurrence of viral illnesses in the United States. The Centers for Disease Control (CDC) reported over 267 million cases of diarrhea in 2000, and estimates about 5 to 17 percent of these may have been caused by a Norwalk virus. Cruise ships are not the only place where you can pick up this nasty bug! Of the 348 outbreaks reported to the CDC between 1996 and 2000, only 10 percent were in vacation settings such as cruise ships. Restaurants, nursing homes, hospitals, and daycare centers are the most likely places you will get a norovirus.

How Do People Become Infected with the Norwalk Virus (Norovirus)?
Noroviruses are found in the feces or vomit of infected people. People can become infected with the virus in several ways, including:

• eating food or drinking liquids that are contaminated with norovirus;
• touching surfaces (such as doorknobs) or objects (such as eating utensils) contaminated with norovirus, and then placing their hand in their mouth;
• having direct contact with a person who is infected and showing symptoms

The norovirus is very contagious and can spread rapidly throughout cruise ships. Like the common cold, the norovirus has many different strains, which makes it difficult for a person's body to develop long-lasting immunity. Therefore, norovirus illness can recur throughout a person's lifetime. In addition, some people are more likely to become infected and develop more severe illness than others due to genetic factors.

When Do Norwalk Virus Symptoms Appear?
Symptoms of Norwalk virus or norovirus illness usually begin about 24 to 48 hours after exposure to the virus, but they can appear as early as 12 hours after ingestion. People infected with norovirus are contagious from the moment they begin feeling ill until at least 3 days after recovery. Some people may be contagious for as long as 2 weeks. Therefore, it is particularly important for people to use good handwashing practices after they have recently recovered from a Norwalk virus.
What Treatment Is Available for People with a Norwalk Virus Infection?
Since the Norwalk virus is not bacterial, antibiotics are ineffective in treating the illness. Unfortunately, like the common cold, there is no antiviral medication that works against the Norwalk virus and there is no vaccine to prevent infection. If you are vomiting or have diarrhea, you should try to drink plenty of fluids to prevent dehydration, which is the the most serious health effect that can result from Norwalk virus or norovirus infection.

Can a Norwalk Virus Infections Be Prevented?
You can decrease your chance of coming in contact with the Norwalk Virus or norovirus on a cruise ship by following these preventive steps:

• Frequently wash your hands, especially after using the toilet, changing diapers, and before eating or preparing food.
• Use a bleach-based cleanser to thoroughly clean and disinfect contaminated surfaces immediately after an illness episode.
• Immediately remove and wash clothing or linens (with hot water and soap) that may be contaminated with virus after an illness episode
• Flush or discard any vomitus and/or stool in the toilet and make sure that the surrounding area is kept clean.

Getting a Norwalk-type virus or norovirus can ruin your vacation, but the fear of getting this virus should not keep you at home. Use proper sanitation procedures and remember that you are just as likely to get sick in your hometown!
Link To Original Article

Char great information .... and it is worth repeating:

• Frequently wash your hands, especially after using the toilet, changing diapers, and before eating or preparing food.
• Use a bleach-based cleanser to thoroughly clean and disinfect contaminated surfaces immediately after an illness episode.
• Immediately remove and wash clothing or linens (with hot water and soap) that may be contaminated with virus after an illness episode
• Flush or discard any vomitus and/or stool in the toilet and make sure that the surrounding area is kept clean.

Originally Posted by JoeyandDavid

Char great information .... and it is worth repeating:

• Frequently wash your hands, especially after using the toilet, changing diapers, and before eating or preparing food.
• Use a bleach-based cleanser to thoroughly clean and disinfect contaminated surfaces immediately after an illness episode.
• Immediately remove and wash clothing or linens (with hot water and soap) that may be contaminated with virus after an illness episode
• Flush or discard any vomitus and/or stool in the toilet and make sure that the surrounding area is kept clean.

Exactly. Always worth repeating...similar to something we wrote a few press releases ago:

Several quick and easy steps cruise passengers can take to reduce the risk of contracting norovirus include;

1. Wash Hands, Now Wash Hands Again.
2. Use Anti -Microbial Hand Wash Frequently
3. Avoid Sick Passengers
4. Skip Undercooked or Unwashed Food Items
5. Get Some Rest

Find the rest of the PR here: CruiseLineFans Discuss Port and Cruise Ship Safety with Code Red Radio!

as well as many other spots on the web.

I do hate the fact that the press always blows it out of proportion when it comes to the norovirus on cruise ships. By law, only the cruise industry is required to report nororvirus cases if it exceeds 2% of the total number of passengers. Yet you have a much higher chance of getting nororvirus at hospitals, airplanes, buses, subways, shopping malls, schools, nursing homes, etc. - anywhere alot of people are present. Yet they are not required to report it, so the press never says anything about it. And because of this lopsided and biased reporting, alot of people are unjustifiably afraid of cruising. Because of this, cruise lines take much more of a precaution than any of these other places I mentioned.

Bottom line is that everyone should be following these simple precautions wherever they go - not just on cruise ships.

Pete

The place i hate the worse.. is the elevator going to my doctors office...

Originally Posted by JoeyandDavid

The place i hate the worse.. is the elevator going to my doctors office...

Elbows or knuckles work best for pushing elevator buttons. I never ever use a finger - at least not for pushing elevator buttons anyway.

Pete

latex gloves work better... i get a pair every visit for the next time..

I was told that "the Gel" is completely ineffective against viruses, in fact anything that would kill it you wouldn't want on your skin. I believe there is a surgical grade that does workl but needs to be applied liberally for about 10 minutes, not the pea sized bit we get!! Can't hurt though.

Originally Posted by johnthed0g

I was told that "the Gel" is completely ineffective against viruses, in fact anything that would kill it you wouldn't want on your skin. I believe there is a surgical grade that does workl but needs to be applied liberally for about 10 minutes, not the pea sized bit we get!! Can'p hurt though.

Ha! Weird things are happening with this post! I'll re-do it.

Originally Posted by johnthed0g

I was told that "the Gel" is completely ineffective against viruses, in fact anything that would kill it you wouldn't want on your skin. I believe there is a surgical grade that does workl but needs to be applied liberally for about 10 minutes, not the pea sized bit we get!! Can't hurt though.

From CNN:

Does hand sanitizer kill bacteria and viruses?

As a new feature of CNNhealth.com, our team of expert doctors will answer readers’ questions. Here’s a question for Dr. Gupta.

Question:
"Hand sanitizer has been recommended but the bottles say, "Effective against bacteria," with no mention of viruses. What gives?"
Answer:
That is a good question. There are not a lot of data actually on how effective those sanitizers are against viruses. There have been some studies done over the years and the conclusion is washing your hands with soap and water is still probably the best idea. If you are having a busy day and it is hard to get to a sink, then carrying a bottle of hand sanitizer would be a good idea.

In essence, it makes your hands very inhospitable to viruses. You put it on your hands and viruses simply don't want to cling to it. So it does reduce the amount of a virus that can cling to your hand but it does not kill it.

Alternatively, it also can’t harm you in any way. We get a lot of questions from concerned viewers asking if sanitizers could actually cause antibiotic resistance down the road. Many studies have looked into the issue and all evidence points to the answer being no.

At the end of the day, basic principles apply to avoid getting a virus. Avoid touching your mouth, eyes and nose as much as possible. If you cough or sneeze, cover your mouth and nose with a tissue or your sleeve. If you're sick, stay home and avoid close contact with others. Some viruses can live for hours on surfaces such as ATMs, doorknobs, even money.

So be methodical about good hygiene, all year long!

Posted by: Dr. Sanjay Gupta - CNN Chief Medical Correspondent