What is the incubation period of tuberculosis?
Answers
TB is contagious and can be spread to others by airborne droplets during sneezing, coughing, and contact with sputum, so you can get the disease by close contact with infected people; outbreaks occur in crowded conditions. The incubation period may vary from about two to 12 weeks.
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Incubation Period Of Tb:
Tuberculosis (TB) is a major global concern, responsible for the most deaths due to an infectious etiological agent. According to the WHO 2017 TB report, a quarter of the global population is latently infected with Mycobacterium tuberculosis (M.tb), of which approximately 5-10% of these individuals will develop TB (in their lifetime). One pertinent question, is when will these individuals develop TB ? Do they develop TB during M.tb primary infection (after recent M.tb exposure) ? Or is it due to reactivation of previously dormant M.tb ?
Tuberculosis (TB) is a major global concern, responsible for the most deaths due to an infectious etiological agent. According to the WHO 2017 TB report, a quarter of the global population is latently infected with Mycobacterium tuberculosis (M.tb), of which approximately 5-10% of these individuals will develop TB (in their lifetime). One pertinent question, is when will these individuals develop TB ? Do they develop TB during M.tb primary infection (after recent M.tb exposure) ? Or is it due to reactivation of previously dormant M.tb ?A recent Analysis by Behr et al., “Revisiting the timetable of tuberculosis”, highlights the need for improved understanding of the timeline of TB progression and its implications for TB elimination strategies. In this analysis article, Behr et al., discuss various longitudinal studies that illustrate that majority of TB disease manifests within two years post M.tb exposure. This of particular importance in high endemic countries, where majority of cases are due to newly acquired M.tb infection. Highlighting the need to for improved immunological understanding that lead to better diagnostic tools that can distinguish individuals with primary from those with remote infection, as well as individuals with higher risk of developing TB.
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