Multiple choice The World Tuberculosis Day is observed on which of the following dates? 22nd May 24th March 23rd June 3rd April Reveal answer Fill a bubble to check yourself B Correct answer Explanation World Tuberculosis Day is observed on March 24th each year to commemorate the date in 1882 when Dr. Robert Koch announced his discovery of the bacterium that causes TB. This day raises awareness about the global health burden of tuberculosis.