Less public transport perhaps? I remember studies showing strong correlation even though causation can be questionable (less protected member of society in the

Less public transport perhaps? I remember studies showing strong correlation even though causation can be questionable (less protected member of society in the first place). And anecdotally the only person I know with TB never had known cases neither at home nor at work, which basically leaves the public transportation (which he was using 2-4 times a day at the time) as the most likely source. Another idea could be "better climate" but it's not obvious when I look on the world map of TB incidence.