Doctors said that what they have dreaded for years is here. Oswaldo Juarez, a 21-year-old Peruvian visiting the United States to study English, was diagnosed with contagious, aggressive, severely drug-resistant form of tuberculosis (TB).

Juarez never had TB before.

Juarez was seen with a strain of extremely drug-resistant (XXDR) tuberculosis. Though U. S. never experienced this form of TB but doctors expected it to arrive.

What worries doctors now is more drug-resistant strains of bacteria would appear and would bring with them diseases that doctors cannot treat.

Dr David Ashkin, one of the nation's leading experts on tuberculosis said, "He is really the future. This is the new class that people are not really talking too much about. These are the ones we really fear because I'm not sure how we treat them."

WHO states that there have been two cases diagnosed of XXDR TB in Europe. The only positive part about this case was that Juarez was cured but it took 19 months. Doctors however said that they were concerned about this disease being diagnosed.