This clearing house from The Lancet aggregates scientific articles, news reports and commentary from over 60 journals and societies on the scientific, clinical and public health aspects of A(H1N1) influenza, commonly known as 'swine flu'.

The site contains research articles on the diagnosis, epidemiology, pathogenesis, surveillance, virology, prevention and treatment of A(H1N1) among others. A podcast from John McConnell, editor of The Lancet Infectious Diseases, discusses issues surrounding swine flu. The site also links to relevant organisations and online sources of information about the virus.

This collection of material, from The New England Journal of Medicine (NEJM), includes news, original research, commentary and analysis on the A(H1N1) influenza virus, or 'swine flu', and related topics such as avian influenza, the 1976 swine flu epidemic and the 1918 Spanish flu pandemic.

The NEJM resource also publishes advice to practitioners and surveillance updates, including an interactive map of worldwide cases of A(H1N1) influenza. It also links to relevant public health organisations, professional societies and the United States Centers for Disease Control and Prevention's Twitter feed.

This news special, published by Nature, is a collection of news and commentaries on the 2009 A(H1N1) influenza virus outbreak, more commonly known as swine flu. It includes interviews with researchers and public health officials, and discusses issues such as the spread of the virus, its virology and its severity.

Nature are maintaining a timeline of the outbreak, and provide links to information and guidelines on broader issues such as dealing with pandemics and historical outbreaks of flu, including bird flu and the 1918 Spanish flu.

The Flu Wiki aims to help local communities prepare for and cope with a possible influenza pandemic by collecting information and encouraging discussion. It is a collaborative website that allows any user to edit content, and has an extensive list of other online resources relating to all aspects of avian flu and pandemic preparedness, and a popular online discussion forum.

This blog, from the journal Nature, rounds up news about A(H1N1) influenza, or 'swine flu', from sources around the world. The round-ups include reports and confirmations of cases, warnings and statements issued by public health agencies such as the WHO as well as news of government proposals and actions against swine flu. It also links to other relevant online resources, including commentary, analysis and outbreak maps.

This influenza A(H1N1) information resource from Thomson Reuters links to a daily briefing on the current status of, and future trends in, drug therapy for the disease, that includes basic facts about A(H1N1), more commonly known as 'swine flu'.

The website also provides an article on the threat of an A(H1N1) pandemic and information on the pipeline of influenza vaccines, including some vaccines for A(H1N1) that are under development.