Tularemia is spread by mosquitoes above all but can also spread by tracking dust in on shoes.(plus by handling infected meat and/or eating it rare but I guess you wouldn’t be doing that). Drinking infected water may also be a route of contagion. It can infect lots of animals including cats and humans and reptiles and even spiders, but the most susceptible to the disease are your wild cottontail rabbits (not the same species as domestic rabbits) and hares (lepus species) I think you call them Jack rabbits but they aren’t actually rabbits, they don’t have the same nr of chromosomes + small rodents like mice and fieldmice. It is highly contagious.
Infected (wild) animals often die from septiscemia. The causative agent is a bacteria (francisella tularensis) so it can be cured with antibiotics. If you yourself contract it it starts with a boil where the mosquito stung you a couple of days earlier. Then near-by lymph-nodes get affected and fever, headache and other symtoms arise. You should absolutely seek medical attention if you get a boil after a mosquito-bite and take care to mention the tularemia outbreak in your area.
I got this from the Swedish National Veterinary Medicine something, which is an offical and reliable source. The incidence of tularemia in humans is rising in Sweden (I live in Sweden). It was almost unheard of 15 years ago except in hunters who’d handled meat from infected hares.
The link is in Swedish. http://www.sva.se/sv/Djurhalsa1/Vilda-djur/Viltsjukdomar/Harpest/