Sixty percent of infectious human diseases are shared with other vertebrates. Alan Olmstead and Paul Rhode tell how innovations to combat livestock infections—border control, food inspection, drug regulation, federal research labs—turned the U.S. into a world leader in combatting communicable diseases, and remain central to public health policy.

February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index