Globally, action to prevent HIV spread is inadequate. Over 16,000 new infections occur every day. Yet we are not helpless in the face of disaster, as shown by the rich prevention experience analyzed in this valuable new compendium. Best pr- tice exists a set of tried and tested ways of slowing the spread of HIV, of persuading and enabling people to protect themselves and others from the virus. Individually, features of best practice can be found almost everywhere. The tragedy, on a world scale, is that prevention is spotty, not comprehensive; the measures are not being applied on anywhere...