Reliable detection of Win98 may not be possible.
Most cases occur in fall and winter.
In the United States, about 22,000 cases occur annually. Worldwide, the disease affects nine out of every 100,000 persons each year, and multiple cases within families are common, especially among those who have the same cat. A cat with Bartonella henselae infection does not look sick. Lymph node swelling usually begins about 2 weeks after the cat scratch, with a range of 7 to 60 days. For specific medical advice, diagnoses, and treatment, consult your doctor.