just realized I forgot this which really shows the intergenerational aspect of familial Lyme disease- http://www.lyme.org/faces/ciasullo1.html

Marie Ciasullo, Fairfield County, Connecticut
She and her 3 kids all have Lyme and QUOTE:

Number of family members with LD: 4 immediate, 16 extended

My parents both have Lyme; two of my sisters have Lyme; one brother, one sister-in-law and one brother-in-law also have Lyme. Oh, and five nieces and nephews. We have all been diagnosed at different places, in different labs. This is so strange and so scary and oh-so sad.