Unfortunately, the only details I am really sure of are the specific scenes I mention below. The rest I am quite hazy on.
IIRC it aired sometime in the mid to late 90s (maybe even early 2000s?) and it was on one of the major networks (NBC?) as opposed to a cable network like SciFi/Syfy. The show was about a team that goes around investigating various biological threats (diseases, germ warfare, etc.) They have a whole "hot room" type mobile lab with all the requisite bells and whistles (blinky light computers, biohazard suits, etc.)
In one episode, they were investigating some sort of medical treatment or drug or something that had the unintended side effect of causing the calcium in peoples' bones to leach away at an alarming rate. Peoples' bones started suddenly breaking while they were out walking, exercising, etc. In one scene a woman was swimming and her bones started disintegrating while she was in the pool, causing her to drown. In another episode, one of the main characters became infected with some sort of disease or pathogen or something that caused them to develop a ridiculously high runaway fever, requiring them to cool him or her down in a ice water bath of some sort.