5. There used to be a Lyme disease vaccine, but it was discontinued in 2002. The vaccine manufacturer said demand was insufficient, so production stopped. Because the protection given by the vaccine lessens over time, even people who received the vaccine in 2002 are no longer immune to Lyme disease.
6. The most common symptom of Lyme disease is a rash that looks like a bull’s eye. In 70 to 80 percent of infected people, the bull’s-eye rash, also known by its technical name, erythema migrans, will appear 3 to 30 days after becoming infected. The CDC says the average time for the rash to show up is a week. As the rash spreads, parts of it might clear up, which is how the bull’s eye becomes evident.
But not all patients notice the rash, and a significant percentage will not develop a textbook case of the rash at all, says Phillip J. Baker, PhD, executive director of the American Lyme Disease Foundation.
Other Lyme disease symptoms can appear from several days to even months after the bite. Some are flu-like: fatigue, headache, joint swelling, and dizziness. Other symptoms can include arthritis, irregular heart beat, nerve pain, and memory problems, according to the CDC.