© CDC/Dr. Ray ButlerThe tuberculosis bacterium, Mycobacterium tuberculosis, is easily spread through coughing or sneezing.
Medical experts are alarmed that strains of tuberculosis, or TB, have emerged that are so virulent they're being called "virtually untreatable," even with the most powerful drugs available.
The latest issue of the journal
Emerging Infectious Diseases, published by the Centers for Disease Control and Prevention, reports that cases of "totally drug-resistant" TB have now been seen in South African clinics.
TB is a respiratory infection caused by the bacteria
Mycobacterium tuberculosis; it was once widespread until antibiotics such as streptomycin were developed in the years following World War II. Though TB was eliminated in much of the industrialized world, pockets of the disease remained in developing countries.
And now, TB is poised to make a dramatic - and deadly - comeback. "Whatever we may have once optimistically thought, TB remains with death, taxes and political chicanery as being inevitable, unavoidable and deeply unpleasant," Andrew Bush and Ian Pavord, editors of the journal
Thorax, wrote in the latest issue.
"It shows every sign of weathering the storm of potent anti-tuberculous medications," they added, noting that the disease is capable of "potentially turning the clock back to the 1930s," when TB clinics and sanitariums were commonplace.
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