Other common name(s): norovirus, tummy flu, calicivirus
Family name(s): Caliciviridae
What is Norwalk Virus?
Norwalk virus is an extremely common cause of food-borne illnesses especially in Japan. It greatly affects the human gastrointestinal system. The viruses are commonly associated with shellfishes harvested from sewage-contaminated waters. The norovirus occurs occasionally on many places of the world mainly cruise ships, schools, daycares, restaurants, and summer camps.
What are the Symptoms of Norovirus Infection?
Norwalk virus symptoms occur in all age groups and may include :
1. Stomach cramping
2. Nausea
3. Vomiting (profuse, nonbloody, nonbilious)
4. Watery diarrhea
5. Low-grade fever
6. Head or muscle aches
The symptoms usually show within 1 to 3 days after exposure to the virus, and can persist up to two days to several weeks.
How do Noroviruses Spread?
Norwalk viruses are transmitted via the fecal-oral route. These viruses only spread from person-to-person, and can’t be spread by animals.
Other common routes of infection include:
1. Shellfishes harvested from waters contaminated with sewage.
2. Having contact with objects or surfaces contaminated with norovirus, and then placing their hand in their mouth.
3. Infected people who don’t wash their hands regularly especially before preparing or touching food that another person might eat.
4. Ice or water that is contaminated with sewage.
Recurrent infections can occur through lifetime because norovirus has many different strains, which makes a person’s body difficult to develop long-term immunity.
How to Diagnose Norwalk Virus?
Several tests have became available that can detect norovirus. Laboratory techniques like ELISA (Enzyme-Linked ImmunoSorbent Assay) method and the RT-PCR (reverse transcription polymerase chain reaction) method are used for diagnosis.
How to Prevent the Spread of Norwalk Virus?
The best way to prevent the spread of Norwalk viruses is by thorough handwashing after toilet use and before preparing or serving foods for at least 15 seconds. In addition, have plenty of rest and stay home until your Norwalk virus symptoms are gone.
Other preventive measures are:
1. People who already have a Norwalk virus infection should never prepare food for others.
2. Those who are sick with diarrhea or vomiting should not work in daycare centers or health care facilities until these symptoms have stopped.
3. Dispose or clean and disinfect infected materials or contaminated surfaces immediately after an incident of Norwalk virus infection in your home.
4. Eat only thoroughly cooked shellfish. Avoid food or water that might be prepared in an unsanitary way such as party foods and raw or uncooked foods.
5. Immediately wash clothing that may be contaminated with Norwalk virus after an illness incident.
6. Avoid handshaking when it’s not necessary.
Treatment for Norwalk Virus Infection
There is no antibiotic (Norwalk virus is not bacterial) and antiviral agents that can kill or treat Norwalk viruses. There is also no vaccine yet to prevent infection. Never use any antibiotics, as they tend to make the illness worse. Getting rest and drinking plenty of water to avoid dehydration is the most recommended for this type of illness. Dehydration has the most harmful effect that can result from norovirus infection. Doctors suggest drinking juices that gives additional nutrients to the body rather than drinking just plain water. Avoid drinking milk as it contains sugars that are hard to break down making it harder to digest. Milk may bring you other gastrointestinal problems like stomach cramps and diarrhea.
Some doctors suggest the following recipe for an oral rehydration drink that you can buy at most convenience stores and it is inexpensive to prepare:
To one liter of water, add
- 8 teaspoons of table sugar
- 1/2 teaspoon of table salt
- 1/3 teaspoon of Lite salt (potassium chloride) and
- 1/2 teaspoon of baking soda
Contracting Norwalk-type viruses or noroviruses can indeed be very dangerous and deadly if you don’t follow the preventive measures. Remember to use proper sanitation procedures and utmost cares as soon as an illness episode occurs. Still, the best-known treatment in the medical community is to drink plenty of liquid or electrolyte replacement.
Junji Takano is a Japanese health researcher and has been studying the causes of viruses since 1960. In 1968, he invented the Pyro-Energen, the first electrotherapy device that eradicates viral diseases effectively and without any side effects.
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I scan my computer, and it says I have no viruses and my computer is protected. When I’m on myspace, a pop up comes up saying my computer is infected and a like thing comes up say I have all these viruses. Help?
I don’t know if I should believe the scan or this pop up.
i have a very big problem
i have a big virus dont know what type but hes stealing all my C: drive space
i tryed to download those programs but it isnt 3mb but it has got over 9000 GB and it isnt loading
my browser is google chrome and dont have joined any website that can harm me
jus woke up in the morning nd saw my pc with 0mb free space
system restore is not working
i have had a virus before.
i was going to get a game demo and
turns out some doucshe made it a virus instead of a demo.
luckily my uncle gave me kick ass security software and it
beat the crap out of it like THAT!
next thing i notice i have no more virus and i hate the MF
who put that on. what a dousche bag
@austin9919 -.- You download it on a different computer, put it on a pen drive and transfer it that way. Just make sure you scan your pen drive after wards as it may have the virus on it.
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I scan my computer, and it says I have no viruses and my computer is protected. When I’m on myspace, a pop up comes up saying my computer is infected and a like thing comes up say I have all these viruses. Help?
I don’t know if I should believe the scan or this pop up.
is malware viruses
i guess its virus lol
i have a very big problem
i have a big virus dont know what type but hes stealing all my C: drive space
i tryed to download those programs but it isnt 3mb but it has got over 9000 GB and it isnt loading
my browser is google chrome and dont have joined any website that can harm me
jus woke up in the morning nd saw my pc with 0mb free space
system restore is not working
what should i do plz reply should i format my pc?
@CojRacer me too =(
Thanks Very Much, Keep it up! : )
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I have 237 Trojans sad
11 worms and 2 trojans -.-
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thx
5 trojans
WOW THATNKS MAN I had 17 trojans -.- on my other computer . All removed thanx to u =D
what if im uaseing my computer and i cant download any thing at all can u help me
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ty man !!! it worked trojans gone!
hmm =/
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7 i hadd 97 noob
i have had a virus before.
i was going to get a game demo and
turns out some doucshe made it a virus instead of a demo.
luckily my uncle gave me kick ass security software and it
beat the crap out of it like THAT!
next thing i notice i have no more virus and i hate the MF
who put that on. what a dousche bag
i have 10 viruses now and all of removers not working it’s just making more viruses!
Multi Virus Cleaner has a runtime error =/ If it matters i have W7
Epic<33
multi virus cleaner has a runtime error for me when laucnhing ;(
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@austin9919 -.- You download it on a different computer, put it on a pen drive and transfer it that way. Just make sure you scan your pen drive after wards as it may have the virus on it.