Task: Answer Verification
Input (English): Question: Does abatacept treatment exacerbate chronic Mycobacterium tuberculosis infection in mice?
Answer: Abatacept did not impair the ability of mice to control a chronic M tuberculosis infection. In contrast, mice treated with anti-TNF therapy showed increased pathology and bacterial load, with 100% mortality by week 9. The clinical significance of these findings has not yet been determined.
Output (English): no