So, as a precaution, he put her on two TB drugs.

However, research and development for new TB drugs came to a virtual standstill after the 1960s.

Participants stressed the need for faster-acting, novel TB drugs and highlighted the scientific opportunities involved.

In Russia, 1 in 10 tuberculosis patients cannot take standard TB drugs.

Blood or urine samples may be taken to check for malabsorption of TB drugs.

In 2004, almost half a million of the more than 8 million cases of tuberculosis worldwide were resistant to the most potent TB drugs.

Most patients get the most common malaria and TB drugs and antibiotics.

Meanwhile, on black markets, TB drugs have different value depending on whether they are "wet" or "dry."

"Such entanglements between worldwide pharmaceutical corporations demonstrate the difficult international hurdles still needed to be jumped in order to develop new TB drugs," he added.

No new TB drug has been patented in 30 years.