How many people get Tuberculosis a year?

Answer 1

Tuberculosis is caused by Mycobacterium tuberculosis, a bacterium. Tuberculosis is found worldwide. Tuberculosis is spread from person to person through the air. People with TB disease of the lung spray the bacteria into the air when they cough, sneeze, talk, or laugh. People nearby can breathe in the bacteria and become infected. To become infected, a person usually needs to be exposed for a long time to air containing many TB bacteria. TB infection is diagnosed by a skin test. A small needle is used to put some fluid, called tuberculin, under the skin on the inside of the arm. After 2 to 3 days, the amount of skin swelling around the test area is measured. A positive reaction usually means that the person has TB infection. TB disease is diagnosed by a chest x-ray or a test of a sputum sample.

TB infection and disease are very common worldwide. About 8 million new cases of TB disease occur each year in the world, and approximately 22,000 cases are reported each year in the United States. Also, 10 million to 15 million people in the United States are infected with TB and could develop TB disease in the future. With the discovery of anti-TB drugs in the 1940s, U.S. cases began to decrease for most of the 20th century. However, between 1985 and 1992, TB cases increased. This resurgence of TB prompted the mobilization of improved efforts to prevent and control TB. As a result, cases have dropped each year since 1993.

Answer 2

"In 2008, a total of 12,898 incident tuberculosis (TB) cases were reported in the United States; the TB rate declined 3.8% from 2007 to 4.2 cases per 100,000 population, the lowest rate recorded since national reporting began in 1953. " "Among U.S.-born persons, the number and rate of TB cases continued to decline in 2008. The number of TB cases in U.S.-born persons 5,283." "Among foreign-born persons in the United States, both the number and rate of TB cases declined in 2008. A total of 7,541 TB cases were reported among foreign-born persons"

Answer 3

about 13000 a year.... that is on an average of 22000 a year of reported cases

Answer 4

In 2010, 8.8 million people fell ill with TB and 1.4 million died from TB.

Answer 5

Around an average of 47,000 per year, sometimes more.

Answer 6

There are very few cases of typhoid in US. They mostly belong to travelers and immigrants from endemic area.