PATH’s Vaccine Resource Library (VRL) seeks to gather the world’s best immunization resources in a single, easy-to-use website. The VRL offers a wide variety of high-quality, scientifically accurate documents and links on specific diseases and topics in immunization. It is geared for health professionals in the developing and industrialized worlds, as well as for journalists, policymakers, community leaders, parents, and others interested in vaccine-related resources. The resources found on the VRL are collected from a variety of sources, including news media, scientific journals, and leaders in public health.