In both cases, they may be infecting hundreds of people who have no symptoms.
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Most people become infected with it at some point in their lives, often with no symptoms.
Two people in close contact with her were quarantined for observation but have shown no symptoms so far.
The condition has no symptoms in the early stages but requires patients to use eye drops for life.
Both Ciara's parents carried the gene responsible for EB but had no symptoms and were unaware of the condition.
In about 80% of cases, a person who is infected will not be aware and will have no symptoms.
Doctors said the complaint sometimes caused severe pain but sometimes produced no symptoms.
Most show little or no symptoms, but in the severest cases the cells of the body are starved of energy.
Technically, this means you can have ADHD with no symptoms of H, hence there is no need for the term ADD.
One in three people have low levels of tuberculosis bacteria in their lungs and have no symptoms, known as latent tuberculosis.
If better-tolerated regimens existed, the market could surge as infected people with mild or no symptoms get treatment for the first time.
Cervical polyps can usually be seen during a pelvic exam (they typically have no symptoms, but can sometimes cause spotting between periods).
Despite a growing shareholder culture, the German mutuals' 14m members show no symptoms of the carpetbagging bug that has spread through Britain.
Polio is extremely difficult to control, because a large majority of infected people show no symptoms, but they can still spread the virus.
It is often diagnosed when the cancer is fairly advanced, as there may be no symptoms in the early stages of the disease.
Two months before Kaiya was killed her mother was assessed by an experienced psychiatrist as having no symptoms indicative of a serious mental illness.
You see, the reason it was so difficult to find my Lance Armstrong is that most aneurysms give no symptoms, no warning, before they rupture.
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Patients with prediabetes may have no symptoms at all, but some people experience problems associated with diabetes like blurred vision, unusual thirst and frequent urination.
The staff member had no symptoms, Levin said in a statement.
Sixteen of the men had untreated prostate cancer, they were in the so-called "watchful waiting" group - where the cancer is slow-growing and causing no symptoms.
One of the best known types of glaucoma, common glaucoma, has no symptoms in the early stages but once damage is done it cannot be repaired.
However, since people with the flu virus can be highly infectious despite showing no symptoms, it would be almost impossible to create an effective quarantine regime.
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Tracy Mobley can have good days, when she shows no symptoms of frontotemporal dementia, which affects the areas of the brain associated with personality, behavior and language.
Veterinary doctors say some coronaviruses cause no symptoms at all.
The jury ruled for Brown even though nine treating physicians, an independent medical examiner and an X-ray technician all testified that the plaintiff had no symptoms of asbest0s-related disease.
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Scientists around the world who are investigating the strain suggested the virus could be hard to track because it shows no symptoms in poultry but can be fatal in humans.
Officials said that tests performed on Ernesto Blanco, 73, who worked in AMI's Florida office mailroom, found that he had been exposed to the bacteria, but was exhibiting no symptoms.
But the RNIB says that conditions like early-stage glaucoma have no symptoms and that up to 40% of a person's sight can be lost before they are aware of the problem.
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It is thought these cases do not represent a "tip of the iceberg" with far more people being infected with mild or no symptoms, but the infection is still being analysed.
The detection of Alzheimer's disease in people with no symptoms is very much a work in progress, said Dr. Allan Levey, professor and chair of neurology at Emory University Medical School.
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