The World Health Organization warned last week that the sweeping funding cuts could endanger millions of lives, since many countries depend on foreign aid for TB prevention, testing and treatment.

[38] In addition, the studies were of a mixed nature with some evaluating efficacy of INH in primary TB prevention while others evaluating secondary TB prophylaxis yet others evaluating efficacy ...

Two of the eight studies used INH for prevention of primary infection; three studies used it for secondary prevention of TB, and the remaining three for both primary and secondary prevention.