Prevention of infection refers to the ability of the vaccine to protect individuals from becoming infected with the tuberculosis (TB) bacteria. A person cannot get TB disease if this person does not get infected. A person who is already infected with the TB bacteria prior to vaccination, may still develop TB disease in this case.
ZAMSA-TB: Advancing epidemiological methods for surveillance of Mycobacterium tuberculosis infection
Multi-country study developing and validating clinic-based convenience sampling of Mtb immunoreactivity (IGRA) in children aged 1-5 as a sentinel measure of recent TB transmission. Outputs include geospatial identification of high-transmission neighbourhoods to target adult/adolescent vaccine delivery, and Monte Carlo simulations to size convenience-sampling surveys able to detect population-level vaccine effectiveness during roll-out.
