TB rates in South Africa, and in particular the Western Cape, are high.

Among other reasons, the rise reflected increased immigration from the former Soviet Union, where TB rates are high.

Health officials said the TB rates in specific groups of immigrants reflect the occurrence of tuberculosis in their home countries.

In Arlington County the TB rate is roughly twice the national average.

The committee warned against a replay of the 1970's, when declining TB rates led to a dismantling of prevention and treatment programs.

At that time, surveys found that Haitians among the migrant population had an even higher TB rate, 650 cases per 100,000.

The overall TB rate in New York City is down to 21.3 per 100,000.

Funding cutbacks in the 1980's and early 1990's saw TB rates rise dramatically.

As a result of overcrowding and poor nutrition, TB rates in many prisons are 10 to 40 times higher than in the general public.

The TB rate among state inmates has soared by 900 percent since the mid-1970's, reflecting dramatic rises in the disease in the general population.