Interim technical guidance on use of specific pandemic influenza vaccines during the H1N1 2009 pandemic

This interim guidance outlines the possible strategies that countries may wish to adopt in the deployment of a pandemic-specific vaccine, considering the two objectives of vaccination: protecting those at greatest risk of severe disease and maintaining essential services.
The guidance is based on the experience of the current H1N1 pandemic to date. As the situation evolves, the guidance may be updated to reflect new developments.