The urban boom also gives a clue to TB's rise and fall.
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The problem, however, is that if a patient's TB is resistant to some of those drugs, the cocktail won't work.
There hasn't been a nationwide survey of drug resistance, but India and the WHO say 2% to 3% of India's TB patients are drug resistant.
Gostin says he can sympathize with the TB patient's decision to come back to the United States for treatment, no matter what officials were telling him.
Under the Indian government's TB program, TB deaths have declined.
The WHO warns that crisis looms large in Asia, home to the majority of the world's TB cases, and predicts that the incidence of TB attributable to HIV in Asia will rise from 2% in 1900 to 14% by 2000.
Leader of the Conservatives Andrew RT Davies focused on the resignation of professor Chris Pollock from the government's TB eradication board, saying that the government had "taken a political decision, not a science based decision" regarding their reversal of the planned badger cull.
Dr. Alpa Dalal, a chest physician at GTB Hospital, Mumbai's main TB hospital, said she has been warning government TB officials that the standard cocktail isn't working for many of her drug-resistant cases.
In hopes of slowing the epidemic, Dr. Arata Kochi, director of WHO's global TB program, has been promoting DOTS therapy (directly observed treatment, short-course), whereby health-care workers watch patients take their medicine completely and correctly.
Last year Dr. Kumar, head of the health ministry's Central TB Division, publicly criticized Hinduja Hospital and its researchers, saying their findings of "total drug resistance" published in a medical journal would hurt Indian tourism and should have been reported to him first.
Because patients in many countries aren't tested fully for drug resistance, and national surveys aren't always done, it is difficult to know precisely how widespread drug resistance is or whether the number of cases is on the rise globally, said Mario Raviglione, director of the WHO's Stop TB Department.
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Dr. Mario Raviglione heads the World Health Organization's "Stop TB" program.
When China released its first nationwide survey this year, it found 5.7% of that country's newly diagnosed TB patients were multi-drug-resistant, according to a study published this year in the New England Journal of Medicine.
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The U.S. has strengthened TB screening of immigrant applicants in recent years and tightened travel restrictions for people with infectious TB.
According to the government's own bovine-tb-impact-assessment, the public costs of carrying out the cull exceed any money saved from predicted falls in bovine TB (an average 16% reduction in new cases over nine years - in absolute figures, this amounts to preventing 47 out of 292 infected herds, for an area about half the size of the Gloucestershire pilot zone).
That's bad enough with regular TB or with strains that are resistant to two or three mainline drugs used to treat the disease.
India's own strategic plan for TB calls for improving medical care in the private sector, in addition to scaling up testing and treatment of drug resistance nationwide.
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In other exchanges, the first minister said that he did not want to see the devolution of broadcasting powers and would not be drawn on his government's plans for the eradiation of bovine TB.
The Journal also showed that the WHO's own policies inadvertently helped drug-resistant TB to flourish.
"We're not against culling badgers if it's going to be effective in curbing bovine TB, but you can't apply the criteria everywhere that would make it effective, " Mr Bullock told BBC News.
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The pilot schemes, which aim to assess the effectiveness of the government's plan to slow down the spread of TB in cattle in England, will be monitored by an independent group for a period of six weeks.
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Intestinal tuberculosis and Crohn's Disease have similarities and Crohn's patients tend to respond well to treatments for intestinal TB.
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But TB remains the leading cause of death by infectious disease in the country's adults.
India has made enormous progress in TB control and to imply otherwise wouldn't accurately reflect the WHO's opinion.
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But it's a potential public health catastrophe with the new strain called XDR-TB, for extensively drug resistant tuberculosis.
To raise international awareness of the disease's causes, development and cures, the WHO declared March 24 World TB Day.
U.S. officials also often send patients home with a supply of the TB drugs they need, particularly to countries where supplies are uneven.
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