Does anyone have estimates on the cost effectiveness of trachoma prevention? It seems as though mass antibiotic administration is effective and cheap, and blindness is quite serious. However room for funding might be limited. I haven't seen it investigated by many of the organizations, but maybe I just haven't found the right report.

I think this guide is unnecessarily pessimistic about surviving the blast. A dedicated fallout shelter building will survive 20 psi overpressure, and being away from windows will save you from the third degree burns and flying glass that do a lot of the damage in explosions. Also fires will start: if you live in the Berkeley Hills, this can complicate your situation tremendously.