Using the power of mapping to support South Sudan

(Cross-posted from The Official Google Blog)

Last Thursday, the Google Map Maker team, along with the World Bank and UNITAR/UNOSAT, held a unique event at the World Bank Headquarters in Washington, D.C., and a satellite event in Nairobi at the same time. More than 70 members of the Sudanese diaspora, along with regional experts from the World Bank, Sudan Institute, Voices for Sudan, The Enough Project and other organizations gathered together to map what is expected to become the world’s newest country later this year: the Republic of South Sudan. UN Secretary-General Ban Ki-moon has asked the international community “to assist all Sudanese towards greater stability and development” during and beyond this period of transition.

South Sudan is a large but under-mapped region, and there are very few high-quality maps that display essential features like roads, hospitals and schools. Up-to-date maps are particularly important to humanitarian aid groups, as they help responders target their efforts and mobilize their resources of equipment, personnel and supplies. More generally, maps are an important foundation for the development of the infrastructure and economy of the country and region.

The Map Maker community—a wide-ranging group of volunteers that help build more comprehensive maps of the world using our online mapping tool, Google Map Maker—has been contributing to the mapping effort for Sudan since the referendum on January 9. To aid their work, we’ve published updated satellite imagery of the region, covering 125,000 square kilometers and 40 percent of the U.N.’s priority areas, to Google Earth and Maps.

The goal of last week’s event was to engage and train members of the Sudanese diaspora in the United States, and others who have lived and worked in the region, to use Google Map Maker so they could contribute their local knowledge of the region to the ongoing mapping effort, particularly in the area of social infrastructure. Our hope is that this event and others like it will help build a self-sufficient mapping community that will contribute their local expertise and remain engaged in Sudan over time.

We were inspired by the group’s enthusiasm. One attendee told us: “I used to live in this small village that before today did not exist on any maps that I know of...a place unknown to the world. Now I can show to my kids, my friends, my community, where I used to live and better tell the story of my people.”

The group worked together to make several hundred edits to the map of Sudan in four hours. As those edits are approved, they’ll appear live in Google Maps, available for all the world to see. But this wasn’t just a one-day undertaking—attendees will now return to their home communities armed with new tools and ready to teach their friends and family how to join the effort. We look forward to seeing the Southern Sudanese mapping community grow and flourish.

Posted by France Lamy, Program Manager, Google.org

Generated by BlogIt

BlogIt - Auto Blogging Software for YOU!

Using search patterns to track dengue fever

What does baseball have in common with gazebos? We’re not sure, except that people search on Google for both terms in similar patterns. Last week we introduced Google Correlate, an experimental tool enabling researchers to model real-world behavior using search trends. We’ve heard from many researchers who want to mine this data for new discoveries about economics and public health—much like we designed Google Flu Trends to give an early warning about flu outbreaks. We hope they’re able to make useful discoveries with Google Correlate.

While building Google Correlate, we used it to create an early warning system for another important disease. Google Dengue Trends in Bolivia, Brazil, India, Indonesia and Singapore provides an additional surveillance tool for a disease that affects about 100 million people each year. Dengue is a virus spread through mosquito bites that creates symptoms including high fever, severe headache and pain, rash and mild bleeding. There is no vaccine or treatment, so public health efforts are largely focused on helping people take steps to prevent being infected with the disease.

Singapore has an impressively timely surveillance system for dengue, but in many countries it can take weeks or months for dengue case data to be collected, analyzed and made available. During the dengue outbreak at last year’s Commonwealth Games, we discussed the need for timely dengue information. With help from Professor John Brownstein and Emily Chan from HealthMap, a program at Children’s Hospital Boston and Harvard Medical School, we were able to create our system. Using the dengue case count data provided by Ministries of Health and the World Health Organization, we’re able to build a model that offers near real-time estimates of dengue activity based on the popularity of certain search terms. Google Dengue Trends is automatically updated every day, thereby providing an early indicator of dengue activity.

The methodology for this system is the same as that for Google Flu Trends and is outlined in a newly published article in PLoS Neglected Tropical Diseases.

We hope the early warning provided by Google Dengue Trends helps health officials and the public prepare for potential dengue outbreaks. For those who live in places where dengue is present, remember to follow the advice of health officials to prevent infection by wearing mosquito repellent and emptying any containers that lure mosquito larvae by gathering standing water.

Posted by Vikram Sahai, Software Engineer

Generated by BlogIt

BlogIt - Auto Blogging Software for YOU!