NEWS FLASH: On August 18, 2013, the Centers for Disease Control revised its estimates of numbers of new Lyme disease cases per year from 30,000 to 300,000. This 10X increase was the result of survey blood testing laboratories for numbers of positive blood tests, versus the old method of depending solely on reports from physicians. All physicians are supposed to report all confirmed or suspected Lyme disease to the CDC, but obviously, this has not been true. It is likely that other tick borne diseases are under reported.
In addition to Lyme and Anaplasma, deer ticks may also transmit babesiosis (a parasite disease) and Powassan virus. Babesiosis is rarer than Anaplasma, and Powassan is extremely rare. Other diseases are transmitted by other tick species in other regions of the country. Visit the CDC website for details.