What is epidemiology?
The field of epidemiology encompasses the incidence, distribution, and burden of disease, as well as possible control of disease and risk factors in populations.
The following pages provide current statistical information about LTBI and active TB disease in the US, as well as the global population. In addition, the increased risk to those individuals infected with HIV is presented.
Why is it important?
Over the past several decades, the Centers for Disease Control and Prevention (CDC), as well as the World Health Organization (WHO) have prioritized the prevention and control of tuberculosis. It will become evident that the burden of TB infection remains high, and the risk of progression to active TB disease is a threat to the lives of many people. Testing for TB infection is an integral part of the strategy to prevent TB disease.
