Researchers Track Disease With Google News, Google.org Money

July 8, 2008 — -- When the next salmonella or avian flu outbreak hits, the internet will have the news first.

But good luck finding that news amid the chatter about Angelina Jolie, Tom Cruise or the newly touted benefits of watermelon.

A new website, HealthMap, addresses that challenge by siphoning up text from Google News, the World Health Organization and online discussion groups, then filtering it and boiling it down into mapped data that researchers -- and the public -- can use to track new disease outbreaks, region by region.

"There is so much information on the web about disease outbreaks but it's obscured by garbage and noise," said John Brownstein, a professor at Harvard Medical School, and co-founder of HealthMap.org. "The idea of HealthMap is to get filtered, valuable information to the public and public health community in one freely available resource."

The site's free accessibility could be particularly important in the developing world, where poor public health infrastructure and lack of money has handicapped epidemiological efforts. That's a problem because those regions are exactly where scientists predict new and dangerous diseases are likely to emerge.

HealthMap goes beyond the standard mashup and is more like a small-scale implementation of the long-awaited semantic web. The site, which the researchers describe in the latest issue of open access PLoS Medicine, creates machine-readable public health information from the text indexed by Google News, World Health Organization updates and online listserv discussions.

While aimed at public health workers, HealthMap is also usable by the general public. It locates the outbreaks on a world map and creates a color-coding system that indicates the severity of an outbreak on the basis of news reportage about it. Users of the site can then analyze and visualize the data, gaining unprecedented views of disease outbreaks.

By doing it all with publicly available news sources and low operating costs, the service itself remains free. After a small-scale launch in 2006, the site's model and potential attracted a $450,000 grant last year from Google.org's Predict and Prevent Initiative, which is focused on emerging infectious diseases.