Do you have a degree in public health?
Do you have a degree in public health?
About a quarter of the entire humanity is infected with TBC bacteria. Two billion people, often in the most remote and poorest places in the world, like Niger or Afghanistan.
You don't have to be a public health professional to calculate that USAID can put a dent to this massive problem, but cannot even dream about reducing it to, say, half of its current size.
My point is that I don't think OP is qualified to say whether or not USAID is putting a meaningful dent in the TB problem.
It's entirely possible that, for example, if you deploy resources amongst individuals that are known to travel, for example, you could significantly eliminate the probability of others being infected (including you and I in the developed world).