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Internet2 and Public Health Surveillance
1. Office of Surveillance, Epidemiology, and Laboratory Services
Public Health Surveillance Program Office
Digital Disease Detection:
Novel Approaches in Public Health Surveillance
Taha A. Kass-Hout, MD, MS
Deputy Director for Information Science and BioSense Program Manager
Division of Healthcare Information (DHI)
Public Health Surveillance Program Office (PHSPO)
Office of Surveillance, Epidemiology, and Laboratory Services (OSELS)
Centers for Disease Control & Prevention (CDC)
Any views or opinions expressed here do not necessarily represent the views of the CDC, HHS, or any other entity of the United States
government. Furthermore, the use of any product names, trade names, images, or commercial sources is for identification purposes only,
and does not imply endorsement or government sanction by the U.S. Department of Health and Human Services.
The International meeting of Internet2
Renaissance Waverly Hotel
Sunday October 30th, 2010: 13:30–14:15
Atlanta, GA (USA)
2. The Public Health
Surveillance Challenge
Public Health
Surveillance and the
Internet– the State of
the Art
The Possibilities for
Internet2
3. Surveillance is a global
challenge that knows
no borders
The importance of
timely detection
Limitations of
traditional reporting
systems
Hierarchical lines of
reporting
Variance across different
countries
Multitude of potential
data sources
Real-world lessons
from SARS and H1N1
5. Median of 12 [95% CI, 9
—18] days between
suspected and
confirmed reports
Countries with a high
GDP tended to have
shorter lags (Pearson
correlation -0.4; 95% CI,
-0.6 — -0.2)
Brownstein JS, Freifeld CC, Chan EH, Keller M, Sonricker AL, Mekaru SR, Buckeridge DL. Information Technology and Global
Surveillance of Cases of 2009 H1N1 Influenza. New England Journal of Medicine 2010;362(18):1731-1735.
6. Event-based
ad-hoc unstructured
reports issued by formal or
informal sources…
Indicator-based
number of cases, rates,
proportion of strains…
Adapted from T. Kass-Hout, 2009
7. Waiting for confirmed
laboratory results is
potentially hazardous
Surveillance is increasingly
relying on informal sources
of data
This creates a data deluge
with lots of noise
Fusion of multiple channels of
data which varying levels of
confidence
Collaboration and expert
opinion is as important as
“pure” data
Existing tools may generate
“false alarms”Adapted from J. Brownstein, 2010
13. Adapted from Dzenowagi, WHO, 2005 and T. Kass-Hout, 2009 |
ITU estimates two billion people
online by end 2010
Access to mobile networks available to
over 90% of world population
143 countries offer 3G services
http://www.itu.int/net/pressoffice/press_releases/2010/39.aspx
17. Can’t mine
all possible sources
in all languages
all data types
Delay required for searching, curating and
processing
Massive bandwidth and processing requirements
Resource limited process (both machine and human)
19. Enlisting current Internet2 partners to collaborate on
surveillance efforts
Explore new data types and analytical methods
enabled by Internet2
Use Internet2 Infrastructure to increase
Bandwidth and processing capabilities
Performance and Operational Reliability
Support collaborative Public Health Surveillance Research
Increase the power of existing public health networks
20. John Brownstein, PhD
Clark Freifeld, MS
Seth Foldy, MD, MPH
Sam Groseclose, DVM, MPH
James Buehler, MD
Walton (John) Page, BS, BA
21. Taha A. Kass-Hout, MD, MS
Deputy Director for Information Science and BioSense Program Manager
Division of Healthcare Information (DHI)
Public Health Surveillance Program Office (PHSPO)
Office of Surveillance, Epidemiology, and Laboratory Services (OSELS)
Centers for Disease Control & Prevention (CDC)
Any views or opinions expressed here do not necessarily represent the views of the CDC, HHS, or any other entity of the United States
government. Furthermore, the use of any product names, trade names, images, or commercial sources is for identification purposes only,
and does not imply endorsement or government sanction by the U.S. Department of Health and Human Services.
Thank You!
Editor's Notes
Photo credit: Unknown!
>30 new infectious diseases identified since 1973Figure 1. Geographical distribution of a selected subset of outbreaks confirmed by the World Health Organization (WHO) and reported in the “Disease Outbreak News” reports, 1996-2009. Points mark the reported origin of the outbreak, or if unknown, where there were the highest reported morbidity and mortality rates.
(1) Delay at any point will delay response(2) Infectious diseases can travel at the speed of an airlinerSensitivity analysis was conducted where the hazard after a certain cutoff year relative to the hazard before that cutoff year. Was computed This was done for each year from 1997 to 2008, and found that the hazard ratio actually already starts climbing in 2003, which is the year that SARS broke out. So the experience from SARS alone may have provided the stimulus to bring about changes in reporting diligence. In fact, it was SARS that finally put into action long talked of plans for revising the IHR.
It is not necessarily lack of information… we have a lot of information… rather, can we put the information into intelligence (or context) in a timely manner?Multiple streams include the following- say something about why you need to stitch multiple sources together...How do you put an event into context? And, where is the next disease is going to emerge from... that is the holly grail in this business... Dead crows on the streets of NYCPepto-bismol disappearing from the shelves of grocery storesPhone calls from citizens and the media to the health department about increased absenteeism from schools and businessesIncreased Internet search hits on certain terms per weekSidebar: 5/50 rule, in 5 years time, 50% of all content will be user-generated: (Reference: The Podshowby Ron Bloom (http://www.ronbloom.com/?p=11) 60% content has geo-spatial and temporal aspects… Image Sources:Wikipedia: http://www.citris-uc.org/system/files/imce-u10/Wikipedia-logo.png Blogger: http://z.about.com/d/weblogs/1/5/V/-/-/-/BloggerHomePage.PNG OpenMRS: http://ruddzw.files.wordpress.com/2007/05/openmrs_osx.png Remote Sensing: http://www.medscape.com/content/2000/00/41/47/414717/art-e0603.01.fig2.jpg Cell phone/iPhone; http://healthinformaticsblog.files.wordpress.com/2008/03/iphone-denticon-patient-thumb.jpgWhoIsSick.org: http://gmapsmania.googlepages.com/whosickgmm.JPG
Automated aggregation of data from multiple sourcesApplying artificial intelligence to data filtering/selectionLeverage non-professional networksAllow members of community to populate data> 600 alerts per day from 22 sources from over 20,000 websitesAlerts in 201 countries & territories and 175 disease categoriesSeven languages – English, French, Spanish, Russian, Chinese, Portuguese, Arabic
Data can also be leverage for epidemiological studiesInternationalization LocalizationUseful because of a new context for public health issuesFurther supports English report biasgreater population, numbers of media outlets, public health resources, and availability of electronic communication infrastructure.
In 2002, mobile subscribers overtook fixed line subscribers worldwide and this occurred across geographic regions, socio-demographic criteria (gender, income, age) or economic criteria such as GDP per capita1FeldmannV: Mobile overtakes Internet: Implications for Policy and Regulation. International Telecommjunications Union 2003:1-39 [http://www.itu.int/osg/spu/ni/mobileovertakes/Resources/Mobileovertakes_Paper.pdf]. last accessed 13 March 2009.Access to mobile networks available to over 90% of world population 143 countries offer 3G serviceshttp://www.itu.int/net/pressoffice/press_releases/2010/39.aspx
Platform for collecting information and communicating via short message service (SMS). The system allows a central data hub to be deployed using a laptop and an inexpensive cell phone. Users can then send “broadcast” messages to groups of people, including basic forms requesting information, and collect the responses.