It is not known to cause illness in humans or any other animals, including pigs.
The trace amount is not enough to cause illness, USDA officials said, and is of no special concern.
It can infect humans but does not usually cause illness in healthy people.
In healthy people the virus can cause illness but is rarely dangerous.
Many more tumours are being found before they have spread to cause illness - indeed, some of them, in older men, may never cause any problems.
No one is sure exactly how infants' immune systems learn to distinguish good bugs from bad, but killing off too many gut bacteria even, apparently, ones that cause illness does appear to disrupt the process.
If any of these symptoms develop in the days or weeks that follow you might talk to your doctor about having your child's stool evaluated for an infection since dog poop may contain bacteria and sometimes parasites (such as roundworms, or Toxocara canis) that can cause illness in humans.
Although many cases are aggressive, in some others the cancer is slow growing, and may never cause clinical illness.
"Flu spreads easily and can cause serious illness which would need to be treated in hospital, " said Dr Hussey.
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Measles can cause serious illness and can, in some cases, be fatal.
Seven percent of bills showed traces of bacteria that can cause serious illness, including Staphylococcus aureus and Klebsiella pneumonia, according to the study.
Many E.coli strains are harmless, but the more serious ones can cause serious illness, including vomiting, diarrhoea and, in severe cases, intestinal bleeding.
For example, only 20 years ago Listeria, E. coli O157:H7, Campylobacter and Cyclospora, all of which have caused recent outbreaks, were not known to cause foodborne illness.
The strain H3N2 of the flu virus is causing many of the cases, reports suggest, and it is known to cause severe illness, especially among the elderly.
Pneumococcal disease is a substantial cause of illness and death.
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"This virus has the potential to cause significant illness with hospitalizations and deaths during the U.S. flu season this fall and winter, " said Dr. Karen Kotloff, professor of pediatrics and lead investigator and researcher at Maryland's Center for Vaccine Development.
Smoking is the leading cause of preventable illness and death in the United States.
Although pesticides are not a cause of foodborne illness, produce can be a source of food poisoning.
Samples were taken in the search for the cause of the illness.
Their conclusions are that while depression is not necessarily a cause of the illness, there is a strong suggestion that it may help doctors predict which elderly people will develop heart disease.
Fever reducers such as acetaminophen (Tylenol) or ibuprofen (Advil and Motrin) can help, but remember to avoid aspirin, which can cause a serious illness called Reye Syndrome in children with a viral illness.
One recent case: a small child in Wisconsin who suffered through more than 100 surgeries before sequencing identified the cause of his illness and allowed doctors to prescribe a bone marrow transplant as treatment.
Commenting on the survey's findings, Dr Penny Woods, chief executive of the British Lung Foundation, said the significant decline in the numbers of people smoking in Britain over the last 40 years was "a testament to the effectiveness of combined legislation and awareness raising in tackling what is Britain's leading cause of preventable illness and premature death".
Experts say mental illness does not necessarily cause creativity, nor does creativity necessarily contribute to mental illness, but a certain ruminating personality type may contribute to both mental health issues and art.
Karen Beckwith, who teaches gender politics at Case Western Reserve University, says Edwards' illness may cause voters to look at the presidential race in a new light.
Khanna had been in and out of the hospital during the past few months, but the nature of his illness and cause of death have not been officially disclosed.
If you come in sick, there's a good chance your co-workers and customers will get sick, too -- and in some cases, passing on your illness can cause potentially life-threatening situations.
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