Cases of rabies in humans are very infrequent in the United States and Canada, averaging one or two a year (down from over 100 cases annually in 1900), but the worldwide incidence is estimated to be between 30,000 and 50,000 cases each year.oonosis â Any disease of animals that can be transmitted to humans. Rabies is an example of a zoonosis. As of October 2004, the medical community awaits the publication of findings by the doctors that administered a life-saving treatment that cured a Wisconsin teenager of full-blown rabies.
A normal white blood cell count ranges from 4,500 to 10,000 white blood cells per microliter of blood, states MedlinePlus. Because normal values may differ slightly based upon the laboratory, sample and measurements used, it's best for patients to discuss individual results with their doctors.
A low white blood cell count, or leukopenia, is a decrease in disease-fighting cells (leukocytes) circulating in your blood. The threshold for a low white blood cell count varies from one medical practice to another.Some healthy people have white cell counts that are lower than what's considered normal.A count lower than 4,000 white blood cells per microliter of blood is generally considered a low white blood cell count. The threshold for a low white blood cell count in children varies with age and sex.he threshold for a low white blood cell count varies from one medical practice to another. Some healthy people have white cell counts that are lower than what's considered normal. A count lower than 4,000 white blood cells per microliter of blood is generally considered a low white blood cell count.