How do you know when your country is in dire straits? Having a booming trade in TB-infected saliva might be a good indicator. TB sufferers in Cape Town, South Africa are selling samples of their sputum to healthy people to pass off as their own in a scam to gain medical grants. John Heinrich, chief executive of the SA National Tuberculosis Association, said, "It is definitely happening. People are trying to get a grant by pretending to be TB positive. Instead of handing their own sputum in, they buy it from people who have TB-positive sputum."