So far in 2014, there have been 13 positive test results showing rabies. In 2012 and 2013, there were 13 reported cases of rabies each year, according to reports from the N.C. Department of Health and Human Services. The 2014 cases have included one bat, one skunk, one fox and 10 raccoons.
Carl Williams , the North Carolina state public health veterinarian, said an increased number of reported rabies cases may not reflect an increase in the spread of the virus.
“It’s difficult to say why the numbers fluctuate from year to year,” he said.
Rabies affects the central nervous system, causing problems in the brain. If it goes untreated, rabies can result in death. The virus can be passed between mammals through coming into contact with the saliva or the brain or nervous tissue of an infected animal.
Williams said scientists have a hard time figuring out the prevalence of rabies, which originates in wild animals. It is nearly impossible to count the number of animals in the wild and determine how many have the virus.
“You can look and say objectively that 13 (cases) is larger than 10, but if you don’t know the population from which you’re drawing, then you don’t want to make many inferences about it,” he said.
Williams said the strand of rabies found on the East Coast originates from raccoons.
“A raccoon may be infected for several weeks, whereas a cat, once it becomes infectious, is going to die within four or five days,” he said. “There is less opportunity for them to spread the virus.”