Early infection and the immune response -- Late infection and its complications -- The pathogen, its vector, and its reservoirs -- The ecology of lyme disease -- Approach to diagnosis -- Laboratory tests: the basics -- Putting laboratory testing in its place -- Antibiotics and lyme disease: the basics -- Putting the antibiotics to use -- After antibiotic therapy ends -- Deer ticks transmit other diseases -- Preventing lyme disease: community-wide measures -- Preventing lyme disease: personal and household protection.