There is a certain range of services those minute clinics can offer.
"TB testing $20 (second visit free!) Just what I want. A person with possibly tuberculosis running up and down the aisles in the busiest retail store in the world.
Pregnancy test (urine) $15 So, what if a 15 yo turns up positive? Are they going to council them and send them to the maternity section?
HIV testing. Will they council positives there? "
Why would I, as a walmart customer, would go to the store if I know they are testing for TB there? It is one thing when clinic like this attracts people with strep throat (although I think even this is questionable), but it is certainly the public safety issue when customer can get exposed to TB just because walmart wants to make extra money.