County health officials say they have a life-threatening problem: keeping homeless tuberculosis patients in check. “TB is a highly infectious disease that can cause death,” notes a “request for quotation” recently posted on the county’s website. “To protect public health and safety, isolation policies and a strict medication regimen are prescribed for infectious TB patients. Isolation of the infectious patient allows the County to keep the patient out of the general population and at the same time to adhere to a strict medication regimen.” To achieve its objective, the county set up the Bissell House, a low-profile living facility meant to keep infected patients off the streets while they complete their cures. Residents wear tracking devices that sound an alert whenever “the patient has absconded or left the boundaries of the monitoring system.” But escapees are hard to find, and now officials want to add a Global Positioning System to their arsenal. For an as-yet-unspecified cost, would-be contractors are being asked to “monitor, track, collect and record all movement and location data of patients assigned to GPS tracking, 24 hours a day, 7 days a week.” A county spokeswoman says the location of Bissell House is kept confidential to protect patient privacy.