The site educates visitors about antibiotic resistance by going back to the basics of the human immune system and how we get ill, and explaining microbes. Other factsheets explain when antibiotics are needed, and how to prevent resistance from developing through overuse. 

Unlike many other websites that seek to give readers a basic introduction, it looks at crosscutting issues such as why vaccination is important in preventing illnesses that may then be treated with antibiotics. It also investigates the risks involved in stockpiling antibiotics to safeguard against bioterrorism and explains the use of antibiotics in animal farming.

This group of mainly not-for-profit organisations works to protect consumers from counterfeit medicines. The website publishes an encyclopaedia of counterfeit drug incidents documenting details of where, when and how counterfeit drugs or other medical products have been identified in the legitimate drug supply around the world. Press releases, news articles, resources on online pharmacy regulations and contact details of experts in the field are free to access. The site also features relevant research articles and includes a guide advising pharmacists on how to be alert to counterfeit medicines.

This collection of articles by open-access journal PLoS Medicine includes new and previously published material on the prevention, treatment and control of malaria.

This organisation provides policy analysis, critical information, decision-making tools, and policy advice to governments, civil society organisations and international funders, aiming to stimulate social and economic progress in low- and middle-income countries. It focuses on long-term projects, combining programme implementation with research and analysis. Its website gives an overview of focus areas and current projects in health, good governance, transparency and education. Links to publications are provided, as well as latest news and events.

This Reuters site covers new developments in the bird flu crisis, and offers a free email alert service. Features of the site include a summary of the bird flu crisis, a timeline of events and links to other online resources.

SA HealthInfo provides information about health and health research issues in Southern Africa, with topics ranging from HIV and malaria, to traditional medicines and nutrition. This part of the site provides information about ethics in research, including the South African MRC's latest guidance.

This website posts a series of multimedia documentaries that highlight issues around the crisis of childhood malnutrition. It also publishes a blog containing articles, podcasts, images and reports from events. Bangladesh, Burkina Faso, the Democratic Republic of Congo, Djibouti, India, Mexico and the United States are the campaign's current focus.

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 open-access online journal publishes original research, reviews and opinions on malaria, and has a useful set of malaria research-related links.