More deer ticks mean more Lyme disease cases but that’s not all you need to worry about. UW Entomologist Susan Paskewitz, says climbing number of Lyme Disease cases is tied to an increased deer tick population. But that is not all the ticks can carry. Although a doctor may give you a clean bill of health on a Lyme test, she advises you ask about other pathogens the insects may carry. An example would be anaplasma which may lead to flu like symptoms.