Archive for April, 2009

Tracking an outbreak, 2.0-style

Wednesday, April 29th, 2009

When the power of Google is combined with the authority of the NLM, the CDC, the Canadian Institutes of Health Research and the DoD’s Global Emerging Infections System (among others), and the intellectual might of MIT and Harvard researchers, what you get is HealthMap.org:

HealthMap brings together disparate data sources to achieve a unified and comprehensive view of the current global state of infectious diseases and their effect on human and animal health. This freely available Web site integrates outbreak data of varying reliability, ranging from news sources (such as Google News) to curated personal accounts (such as ProMED) to validated official alerts (such as World Health Organization). Through an automated text processing system, the data is aggregated by disease and displayed by location for user-friendly access to the original alert. HealthMap provides a jumping-off point for real-time information on emerging infectious diseases and has particular interest for public health officials and international travelers.

Health issues in the new, ‘2.0′ (for lack of a better term) technology-driven environment are an interesting thing, but not studied enough. I came across this article, from the Journal of the American Medical Informatics Association (JAMIA) via Pubmed:

HealthMap: global infectious disease monitoring through automated classification and visualization of Internet media reports.

Children’s Hospital Informatics Program, Harvard-MIT Division of Health Sciences and Technology, 300 Longwood Ave., Boston, MA 02115, USA. clark.freifeld@childrens.harvard.edu

OBJECTIVE: Unstructured electronic information sources, such as news reports, are proving to be valuable inputs for public health surveillance. However, staying abreast of current disease outbreaks requires scouring a continually growing number of disparate news sources and alert services, resulting in information overload. Our objective is to address this challenge through the HealthMap.org Web application, an automated system for querying, filtering, integrating and visualizing unstructured reports on disease outbreaks. DESIGN: This report describes the design principles, software architecture and implementation of HealthMap and discusses key challenges and future plans. MEASUREMENTS: We describe the process by which HealthMap collects and integrates outbreak data from a variety of sources, including news media (e.g., Google News), expert-curated accounts (e.g., ProMED Mail), and validated official alerts. Through the use of text processing algorithms, the system classifies alerts by location and disease and then overlays them on an interactive geographic map. We measure the accuracy of the classification algorithms based on the level of human curation necessary to correct misclassifications, and examine geographic coverage. RESULTS: As part of the evaluation of the system, we analyzed 778 reports with HealthMap, representing 87 disease categories and 89 countries. The automated classifier performed with 84% accuracy, demonstrating significant usefulness in managing the large volume of information processed by the system. Accuracy for ProMED alerts is 91% compared to Google News reports at 81%, as ProMED messages follow a more regular structure. CONCLUSION: HealthMap is a useful free and open resource employing text-processing algorithms to identify important disease outbreak information through a user-friendly interface.

And this article, from PLoS Medicine:


John S Brownstein,* Clark C Freifeld, Ben Y Reis, and Kenneth D Mandl
As developed nations continue to strengthen their electronic disease surveillance capacities [1], the parts of the world that are most vulnerable to emerging disease threats still lack essential public health information infrastructure [2,3]. The existing network of traditional surveillance efforts managed by health ministries, public health institutes, multinational agencies, and laboratory and institutional networks has wide gaps in geographic coverage and often suffers from poor and sometimes suppressed information flow across national borders [4]. At the same time, an enormous amount of valuable information about infectious diseases is found in Web-accessible information sources such as discussion sites, disease reporting networks, and news outlets [5,6,7]. These resources can support situational awareness by providing current, highly local information about outbreaks, even from areas relatively invisible to traditional global public health efforts [8]. These data are plagued by a number of potential hazards that must be studied in depth, including false reports (mis- or disinformation) and reporting bias. Yet these data hold tremendous potential to initiate epidemiologic follow-up studies and provide complementary epidemic intelligence context to traditional surveillance sources. This potential is already being realized, as a majority of outbreak verifications currently conducted by the World Health Organization (WHO)’s Global Outbreak Alert and Response Network are triggered by reports from these nontraditional sources [5,6].

Swine Flu meta-pages

Tuesday, April 28th, 2009

Between last year’s energy crisis, the bad economic news and the Tri-Delts walking into the library in their hippy-chick summer dresses, it’s like we’re back to the 70’s. And now, swine flu…

 

Dr. Joe Bresee, CDC Influenza Division

Several librarians have put together ‘meta’ pages of resources relating to the outbreak (not yet an official pandemic or even an epidemic), so I won’t try to re-invent the wheel.

Chris Childs, at the University of Iowa’s Hardin Library for the Health Sciences, has put together a Libguide page of Swine Flu information. (This is the type of guide we’ll be moving to for our subject research guides over the summer, so if you are a user of my ESM Research Guide, this is what you’ll see in the fall. Good stuff.)

The National Library of Medicine and the National Institutes for Health run Medline, a comprehensive public health database. The Swine Flu page here has a lot of CDC information, but also links to refereed (peer-reviewed) articles from the Pubmed database. They have also compiled a “Specialized Information Services” page on the environmental health and toxicology aspects of the flu.

 
View H1N1 Swine Flu in a larger map

This report, from a commercial investment research analysis company, compares this outbreak to SARS and other influenza outbreaks, and focuses on the [possible] economic effects of this particular flu.

Finally, I’ve referenced this site before, so I’ll reference it again: the CDC has a great “Pandemic Influenza” site that links to many resources for planning for and dealing with an outbreak. 

Stay well out there. Let’s keep this in the category of “live drill” rather than “real thing”. Wash your hands, don’t touch your face, stay home if you are sick…

Keeping Up with ESM Research Resources

Thursday, April 23rd, 2009

Because the field of Emergency Services Management is so new, diverse and inter-disciplinary, I employ a number of techniques to make ‘keeping up’ in the field manageable.* One of them is setting up “Journal Alerts” in databases for the journals that I know are most relevant to the field. This is an easy way to get the titles and abstracts delivered to my email inbox or RSS reader every time a new issue is published.

The journals that I try to read in this field are:

–International Journal of Emergency Management
–Journal of Emergency Management
–Natural Hazards Review
–Futures Research Quarterly
–Disaster Prevention and Management
–International Journal of Mass Emergencies and Disasters
–Journal of Business Continuity and Emergency Planning
–Journal of Homeland Security and Emergency Management

Over the course of the next few Thursdays, I’ll be reviewing these journals, and giving instructions for signing up for alerts for each. If you know of a journal the library should subscribe to in this field, let me know!

(*) If you think you have it bad with this subject, imagine how much reading I have to do to stay current in all the fields I support (ESM/Disaster Science, HRM, Information Systems, Liberal Arts, and Teacher Licensure) and my very own Library & Information Science field…

Earthquake “Meta-”post

Wednesday, April 15th, 2009

(One more, and then I’ll move on. I promise…)


The USGS website is a gift that keeps on giving as far as historic information on earthquakes is concerned. Need a list (with descriptions) of the earthquakes which caused 1000 or  more deaths since 1900? Here you are. What about US National Seismic Hazard Maps (so people can keep arguing about whether or not earthquakes are predictable events)? Here, along with Seismic Design Values for Buildings, a Java-based calculator which can provide Hazard Curves, design parameters from ASCE and international building codes, and “uniform hazard response spectra”. How about an estimate of the number of people and the names of cities exposed to severe shaking following significant earthquakes worldwide? Yup, that’s here too, under the “PAGER – Prompt Assessment of Global Earthquakes for Response” heading. Because I’m working on a loaner computer, I can’t look at the Google Earth tools, but I’ve bookmarked them for later because so many of them look interesting. Finally, a page of preparedness-related website links gives great resources for students in our ESM/Disaster Science program, including the LA City Fire Department Earthquake Preparedness Handbook, the NEHRP (the Federal Government’s earthquake risk reduction program), and others.

Hospital Evacuations

Wednesday, April 8th, 2009

Today’s story should be an earthquake one, given the recent events in Italy, but this story was an interesting link between the flooding in ND and the disaster unfolding in L’Aquila. The WHO marked World Health Day by focusing on the theme of “Safe Hospitals Save Lives”. More information on their “Safe Hospitals” initiative, including information on the “Hospital Safety Index,” case studies, and a photo gallery, can be found here.

This Propublica story lauds the preparedness of the Fargo and Moorehead hospitals and nursing homes. They were able to evacuate between 500 and 600 residents safely, in an orderly and timely fashion. Voice of America’s story relating to this makes the connection explicitly.

And if you happen to be interested in this topic, the Central United States Earthquake Consortium (who knew?) is offering a free class onDisaster Medicine 201:  Post-Earthquake Medical Challenges in the New Madrid Seismic Zone”, May7-8 at the University of Tennessee Health Sciences Center in Memphis, TN.

“This class is a big-picture overview of medical issues related to the earthquake threat in the New Madrid Seismic Zone.  It was developed through the cooperation of CUSEC and the Centers for Disease Control and Prevention (CDC).  The class is presented with the invaluable assistance of the University of Tennessee Health Science Center.  The primary instructors are doctors with extensive backgrounds in emergency and disaster medicine.”

Actually, the New Madrid Fault Line has a long history of causing trouble in this part of the country (although it’s been quiet of late); an excellent book on that topic is “When the Mississippi Ran Backwards: Empire, Intrigue, Murder, and the New Madrid Earthquakes“, by Jay Feldman. Dr. Walter Green includes it in his “50 Books” for Emergency Services Management list.

(2007-08) Feldman, Jay; When The Mississippi Ran Backwards: Empire, Intrigue, Murder, and the New Madrid Earthquakes; [book]; New York, New York, United States of America; Free Press; 2005.

Studies of disasters often focus on the technical issues of the disaster itself, and occasionally on the immediate political and social fallout of the event.  Feldman has written a book that takes the series of New Madrid earthquakes and puts them in two other contexts.  At the macro level he recounts the relationship of the earthquake in the much larger context of the American frontier, examining its interplay with Tecumseh’s campaign against United States expansion into Native American tribal lands.  On the micro level, he examines the relationship of the disaster to the murder of a slave by two of Thomas Jefferson’s nephews, and to the eventual downfall of their family.   The result is an interesting read that broadens your understanding of the New Madrid earthquakes and of the time in which they occurred.

Finally, this article,  “Counting Crises: US Hospital Evacuations, 1971-1999,” (available to U of R students in print or through our delivery service to distance education students), from the journal Prehospital and Disaster Medicine, investigates:

“the relative distribution of hazards causing hospital evacuations, thereby to provide rudimentary risk information for hospital disaster planning. “

[Hat tip to Cindy Love, at the Disaster Information Management Research Center, National Library of Medicine, for the idea for this post and many of the links.]

Fargo Flood Homepage

Thursday, April 2nd, 2009

We’ll stay with the flood theme for a bit, and look at the “Fargo Flood Homepage (Red River)“, a link page developed by North Dakota State University. In addition to a graphic representation of the flood’s current stage, there are links to information about the geology of the region, photos, and the aforementioned hydrographs. The site also links to satellite maps, forecasting tools, and lists of resources from the NDSU Libraries and Extension Service.

For me, the best link is an extensive bibliography of scholarly scientific resources relating to the flood, compiled by the NDSU Library. But perhaps the most sobering is an article entitled, “What Makes the Red River of the North so Vulnerable to Flooding?” It’s this kind of detailed study that is going to help avert catastrophic floods in the future, and it’s good to see someone doing the hard work these studies require.

Wishing everyone in Fargo a dry day, and fortitude as they clean up and rebuild.