stephen elledge, the professor. questions, it ask is (202) 748-8000 four eastern and central. (202) 748-8001 mountain and pacific. medical professionals, (202) 748-8002. theguest is a professor at harvard medical school and brigham and women's hospital. austin, texas you are on. caller: thank you for taking my call. elledge. mr. i want to say to everybody and get y'all's comments about -- we have done this before. we did this with tuberculosis. old, iwas six years stuck out my arm, nobody had a choice, you got a tb skin test. latented for tuberculosis, people who were carrying tuberculosis had the bacteria, but did not show symptoms. but, everybody did it. it was a good test. it was easy to administer. everybody took it. there wasn't everything about -- there wasn't anything about privacy. had tuberculosis, they had serious quarantine procedures. they would lock you up in a state hospital. after the 1940's, they had drugs to give you treatment instead of it just being a tb sanitarium. is, we need good accurate testi