Tuberculosis cases hit all-time low in US

March 25, 2011 4:58:41 AM PDT
Tuberculosis cases have dropped to an all time low in the U.S.

While TB rates have hit a record low, the disease continues to disproportionately affect racial and ethnic minorities and people infected with HIV.

The study found infection rates were seven times higher for Hispanics, eight times for blacks and 25 timers higher for Asians than for whites.

TB is caused by germs spread through the air from person to person and it typically affects the lungs.

Left untreated, it can be fatal.

The report appears in the CDC's Morbidity and Mortality Weekly Report.