Table 1.

Summary of patient characteristics

Subjects	Sex	Age, years	Area of residence	Delusional disease	RPR	Borrelia burgdorferi serology
Patient 1	Female	72	San Antonio, TX, USA	No	Negative	Positive
Patient 2	Female	49	Hughes Springs, TX, USA	No	Negative	Positive
Patient 3	Female	54	Cardston, AB, Canada	No	Negative	Positive
Patient 4	Female	73	Calgary, AB, Canada	No	Negative	Positive

Abbreviation: RPR, rapid plasma reagin.