A salmonella infection is a foodborne illness caused by the salmonella bacteria carried by some animals, which can be transmitted on kitchen surfaces and in water, soil, animal feces, raw meats, and eggs. Salmonella infections typically affect a child's intestines, causing vomiting, fever, and other symptoms that usually resolve without medical treatment.
You can help prevent salmonella infections by not serving any raw meat or eggs, and by not keeping reptiles as pets, particularly if you have very young children. Hand washing is a powerful way to guard against salmonella infections, so it's essential to teach children to wash their hands, particularly after trips to the bathroom and before handling food in any way.
Salmonella Basics
Not everyone who ingests salmonella bacteria will become ill. Children, especially infants, are the most likely candidates to get sick from it. About 50,000 cases of salmonella infection are reported in the United States each year and about one third of those are in children 4 years old or younger.
The type of salmonella most commonly associated with infections in humans is called nontyphoidal salmonella. It is carried by chickens, cows, and reptiles such as turtles, lizards, and iguanas.
Another, rarer form of salmonella, typhoidal salmonella, is carried only by humans and is usually transmitted through direct contact with the fecal matter of an infected person. This kind of salmonella infection can lead to typhoid fever, which causes high fever, abdominal pain, headache, malaise, lethargy, skin rash, constipation, and delirium. It occurs primarily in developing countries without appropriate systems for handling human waste.
Signs and Symptoms
A salmonella infection generally causes nausea, vomiting, abdominal cramps, diarrhea (sometimes bloody), fever, and headache. Because many different kinds of illnesses can cause these symptoms, most doctors will take a sample of a child's stool to make an accurate diagnosis.
Symptoms of most salmonella infections usually appear within 2 days of contamination and typically go away without any medical treatment.
In cases of typhoid fever caused by salmonella bacteria, early symptoms are the same. But in the second week, the liver and spleen can become enlarged, and a distinctive "rose spotted" skin rash may appear. From there, the infection can cause other health problems, like meningitis and pneumonia.
People at risk for more serious complications from a salmonella infection include those who:
have compromised immune systems (such as people with HIV)
take cancer-fighting drugs
have sickle cell disease or an absent or nonfunctioning spleen
take chronic stomach acid suppression medication
In these higher-risk groups, most doctors will treat an infection with antibiotics to prevent it from spreading to other parts of the body and causing additional health problems.
Prevention
You have many ways to help prevent salmonella bacteria from making your child sick. Most salmonella bacteria appear in animal products and can be killed by the heat from cooking. So it's important to make sure that your child does not eat raw or undercooked eggs, poultry, or meat.
Because salmonella bacteria can contaminate even intact and disinfected grade A eggs, avoid serving your child poached eggs or eggs that are served sunny-side up.
Salmonella also can be spread through cross-contamination, so when you're preparing meals, try to keep uncooked meats away from cooked and ready-to-eat foods. In addition, it's important to thoroughly wash your hands, cutting boards, counters, and knives after handling uncooked foods.
Some foods may contain unrecognized raw-food products and should be avoided. Caesar salad dressing, the Italian dessert tiramisu, homemade ice cream, chocolate mousse, eggnog, cookie dough, and frostings can contain raw eggs. Unpasteurized milk and juices also can be contaminated with salmonella.
Fecal matter is often the source of salmonella contamination, so hand washing is extremely important, particularly after using the toilet and before preparing food.
Take care to avoid contact with the feces of family pets - especially reptiles. Wash your hands thoroughly after handling an animal and ensure that no reptiles are permitted to come into contact with an infant. Even healthy reptiles (especially turtles and iguanas) are not appropriate pets for small children and should not be in the same house as an infant.
Treatment
If your child has a salmonella infection and a healthy immune system, your child's doctor may let the infection go away without treatment. But any time your child develops a fever, headache, or bloody diarrhea, call the doctor to rule out any other problems.
If your child is infected and has a fever, you may want to give acetaminophen to reduce his or her temperature and relieve cramping. As with any infection that causes diarrhea, it's important to give your child plenty of liquids to avoid dehydration
BACKGROUND: Nontyphoidal Salmonella is a leading cause of foodborne illness. Few studies have explored the health consequences of antimicrobial-resistant Salmonella. METHODS: The National Antimicrobial Resistance Monitoring System (NARMS) performs susceptibility testing on nontyphoidal Salmonella isolates. The Foodborne Diseases Active Surveillance Network (FoodNet) ascertains outcomes for patients with culture-confirmed Salmonella infection, in 9 states, each of which participates in NARMS. We analyzed the frequency of bloodstream infection and hospitalization among patients with resistant infections. Isolates defined as resistant to a clinically important agent were resistant to 1 or more of the following agents: ampicillin, ceftriaxone, ciprofloxacin, gentamicin, and/or trimethoprim-sulfamethoxazole. RESULTS: During 1996-2001, NARMS received 7370 serotyped, nontyphoidal Salmonella isolates from blood or stool. Bloodstream infection occurred more frequently among patients infected with an isolate resistant to > or =1 clinically important agent (adjusted odds ratio [OR], 1.6; 95% confidence interval [CI], 1.2-2.1), compared with patients with pansusceptible infection. During 1996-2001, FoodNet staff ascertained outcomes for 1415 patients who had isolates tested in NARMS. Hospitalization with bloodstream infection occurred more frequently among patients infected with an isolate resistant to > or =1 clinically important agent (adjusted OR, 3.1; 95% CI, 1.4-6.6), compared with patients with pansusceptible infection. CONCLUSIONS: Patients with antimicrobial-resistant nontyphoidal Salmonella infection were more likely to have bloodstream infection and to be hospitalized than were patients with pansusceptible infection. Mitigation of antimicrobial resistance in Salmonella will likely benefit human health
2006-11-30 08:20:50
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answer #3
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answered by amalia372005 5
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