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CDC concerned about drug-resistant TB
A new strain of drug-resistant tuberculosis that is "virtually untreatable" is raising alarm among public health officials, even as the less virulent, and much more common, form of TB continues to decline in the United States.
The Centers for Disease Control and Prevention reported for the first time Thursday on the emergence of "extensively drug-resistant" tuberculosis, which does not respond to most first- or second-line drug therapies for TB.
The new strain is still rare in the United States. But public health officials in San Francisco, where the tuberculosis rate is the highest in the country, say they're seeing patients who face an increasingly resilient form of TB and don't respond to any of the drugs used to fight the disease.