Immigration, both legal and illegal should be at the top of the list for reasons why there are so many cases of multi drug resistant TB in the U.S.
Keshavjee shared 2008 data from WHO indicating that among 27 high-burden countries, China, India, and Russia have the highest numbers of MDR TB patients. It is estimated that 50 percent of MDR TB cases worldwide occur in China and India. Other countries with large numbers of MDR TB cases include Bangladesh, Indonesia, Myanmar, Nigeria, Pakistan, the Philippines, and South Africa.
I was thinking of the problem with the homeless who don’t finish their round of antibiotics. Much of the problem with drug resistance is people not finishing a course of antibiotics.