<unk>  is<unk>  to<unk><unk>  on the job. It is a major health issue among outdoor workers.<unk><unk>  is the most commonly reported tick-borne<unk>  in the United States. In 2010, more than 22,500 confirmed and 7,500 probable cases of<unk><unk>  were reported to the Centers for<unk>  Control and Prevention (CDC).<unk><unk>  is passed to humans by the bite of black-legged ticks (also known as deer ticks in the eastern United States) and western black-legged ticks infected with the bacterium Borrelia burgdorferi. The<unk><unk>  bacterium normally lives in mice, squirrels, and other small mammals. Cat fleas and ticks can carry pathogenic organisms that infect a person with<unk><unk>  and other tick-borne<unk> s.
Occupational exposure to Lyme disease
History of leprosy
Immunization during pregnancy
History of coronavirus
History of smallpox
Shoulder injury related to vaccine administration
History of chemical warfare
History of plague