SlideShare una empresa de Scribd logo
1 de 7
 
A Brief History
Building Distribute
Current State
Information Pathways
Data Characteristics
Acknowledgements

Más contenido relacionado

Destacado

Biosurveillance 2.0: Lecture at Emory University
Biosurveillance 2.0: Lecture at Emory UniversityBiosurveillance 2.0: Lecture at Emory University
Biosurveillance 2.0: Lecture at Emory UniversityTaha Kass-Hout, MD, MS
 
InSTEDD Tools for Outbreak Epidemiology
InSTEDD Tools for Outbreak EpidemiologyInSTEDD Tools for Outbreak Epidemiology
InSTEDD Tools for Outbreak EpidemiologyTaha Kass-Hout, MD, MS
 
Evolve: InSTEDD's Global Early Warning and Response System
Evolve: InSTEDD's Global Early Warning and Response SystemEvolve: InSTEDD's Global Early Warning and Response System
Evolve: InSTEDD's Global Early Warning and Response SystemTaha Kass-Hout, MD, MS
 
BioSense Program Going Forward: HIMSS10 Conference
BioSense Program Going Forward: HIMSS10 ConferenceBioSense Program Going Forward: HIMSS10 Conference
BioSense Program Going Forward: HIMSS10 ConferenceTaha Kass-Hout, MD, MS
 
A Brief Introduction to the SCRUM Agile Methodology
A Brief Introduction to the SCRUM Agile MethodologyA Brief Introduction to the SCRUM Agile Methodology
A Brief Introduction to the SCRUM Agile MethodologyTaha Kass-Hout, MD, MS
 
Using Open Source Software For Public Health Kass-Hout Di Tada
Using Open Source Software For Public Health Kass-Hout Di TadaUsing Open Source Software For Public Health Kass-Hout Di Tada
Using Open Source Software For Public Health Kass-Hout Di TadaTaha Kass-Hout, MD, MS
 
Riff: A Social Network and Collaborative Platform for Public Health Disease S...
Riff: A Social Network and Collaborative Platform for Public Health Disease S...Riff: A Social Network and Collaborative Platform for Public Health Disease S...
Riff: A Social Network and Collaborative Platform for Public Health Disease S...Taha Kass-Hout, MD, MS
 
BioSense Program: Scientific Collaboration
BioSense Program: Scientific CollaborationBioSense Program: Scientific Collaboration
BioSense Program: Scientific CollaborationTaha Kass-Hout, MD, MS
 
ICT Developments in Mobile Technology for Global Public Health: InSTEDD Colla...
ICT Developments in Mobile Technology for Global Public Health: InSTEDD Colla...ICT Developments in Mobile Technology for Global Public Health: InSTEDD Colla...
ICT Developments in Mobile Technology for Global Public Health: InSTEDD Colla...Taha Kass-Hout, MD, MS
 

Destacado (16)

Biosurveillance 2.0
Biosurveillance 2.0Biosurveillance 2.0
Biosurveillance 2.0
 
Evolve
EvolveEvolve
Evolve
 
Epi Info™ Mesh4x
Epi Info™ Mesh4xEpi Info™ Mesh4x
Epi Info™ Mesh4x
 
Biosurveillance 2.0: Lecture at Emory University
Biosurveillance 2.0: Lecture at Emory UniversityBiosurveillance 2.0: Lecture at Emory University
Biosurveillance 2.0: Lecture at Emory University
 
InSTEDD Tools for Outbreak Epidemiology
InSTEDD Tools for Outbreak EpidemiologyInSTEDD Tools for Outbreak Epidemiology
InSTEDD Tools for Outbreak Epidemiology
 
Evolve: InSTEDD's Global Early Warning and Response System
Evolve: InSTEDD's Global Early Warning and Response SystemEvolve: InSTEDD's Global Early Warning and Response System
Evolve: InSTEDD's Global Early Warning and Response System
 
BioSense Program Going Forward: HIMSS10 Conference
BioSense Program Going Forward: HIMSS10 ConferenceBioSense Program Going Forward: HIMSS10 Conference
BioSense Program Going Forward: HIMSS10 Conference
 
A Brief Introduction to the SCRUM Agile Methodology
A Brief Introduction to the SCRUM Agile MethodologyA Brief Introduction to the SCRUM Agile Methodology
A Brief Introduction to the SCRUM Agile Methodology
 
Change Point Analysis
Change Point AnalysisChange Point Analysis
Change Point Analysis
 
Using Open Source Software For Public Health Kass-Hout Di Tada
Using Open Source Software For Public Health Kass-Hout Di TadaUsing Open Source Software For Public Health Kass-Hout Di Tada
Using Open Source Software For Public Health Kass-Hout Di Tada
 
Big Data in Public Health
Big Data in Public HealthBig Data in Public Health
Big Data in Public Health
 
Riff: A Social Network and Collaborative Platform for Public Health Disease S...
Riff: A Social Network and Collaborative Platform for Public Health Disease S...Riff: A Social Network and Collaborative Platform for Public Health Disease S...
Riff: A Social Network and Collaborative Platform for Public Health Disease S...
 
precisionFDA
precisionFDAprecisionFDA
precisionFDA
 
Introducing BioSense Program Redesign
Introducing BioSense Program RedesignIntroducing BioSense Program Redesign
Introducing BioSense Program Redesign
 
BioSense Program: Scientific Collaboration
BioSense Program: Scientific CollaborationBioSense Program: Scientific Collaboration
BioSense Program: Scientific Collaboration
 
ICT Developments in Mobile Technology for Global Public Health: InSTEDD Colla...
ICT Developments in Mobile Technology for Global Public Health: InSTEDD Colla...ICT Developments in Mobile Technology for Global Public Health: InSTEDD Colla...
ICT Developments in Mobile Technology for Global Public Health: InSTEDD Colla...
 

Más de Taha Kass-Hout, MD, MS

A Brief Introduction to the SCRUM Agile Methodology
A Brief Introduction to the SCRUM Agile MethodologyA Brief Introduction to the SCRUM Agile Methodology
A Brief Introduction to the SCRUM Agile MethodologyTaha Kass-Hout, MD, MS
 
e-Democracy: Egypt’s 18 Day Revolution
e-Democracy: Egypt’s 18 Day Revolutione-Democracy: Egypt’s 18 Day Revolution
e-Democracy: Egypt’s 18 Day RevolutionTaha Kass-Hout, MD, MS
 
Biosurveillance: Machine Learning And Disease Surveillance by Kass-Hout Di Tada
Biosurveillance: Machine Learning And Disease Surveillance by Kass-Hout Di TadaBiosurveillance: Machine Learning And Disease Surveillance by Kass-Hout Di Tada
Biosurveillance: Machine Learning And Disease Surveillance by Kass-Hout Di TadaTaha Kass-Hout, MD, MS
 

Más de Taha Kass-Hout, MD, MS (6)

A Brief Introduction to the SCRUM Agile Methodology
A Brief Introduction to the SCRUM Agile MethodologyA Brief Introduction to the SCRUM Agile Methodology
A Brief Introduction to the SCRUM Agile Methodology
 
e-Democracy: Egypt’s 18 Day Revolution
e-Democracy: Egypt’s 18 Day Revolutione-Democracy: Egypt’s 18 Day Revolution
e-Democracy: Egypt’s 18 Day Revolution
 
Change Point Analysis (CPA)
Change Point Analysis (CPA)Change Point Analysis (CPA)
Change Point Analysis (CPA)
 
InSTEDD Mesh4x Platform
InSTEDD Mesh4x PlatformInSTEDD Mesh4x Platform
InSTEDD Mesh4x Platform
 
Oswego in the Cloud: Scenario Script
Oswego in the Cloud: Scenario ScriptOswego in the Cloud: Scenario Script
Oswego in the Cloud: Scenario Script
 
Biosurveillance: Machine Learning And Disease Surveillance by Kass-Hout Di Tada
Biosurveillance: Machine Learning And Disease Surveillance by Kass-Hout Di TadaBiosurveillance: Machine Learning And Disease Surveillance by Kass-Hout Di Tada
Biosurveillance: Machine Learning And Disease Surveillance by Kass-Hout Di Tada
 

Último

Independent Call Girls In Jaipur { 8445551418 } ✔ ANIKA MEHTA ✔ Get High Prof...
Independent Call Girls In Jaipur { 8445551418 } ✔ ANIKA MEHTA ✔ Get High Prof...Independent Call Girls In Jaipur { 8445551418 } ✔ ANIKA MEHTA ✔ Get High Prof...
Independent Call Girls In Jaipur { 8445551418 } ✔ ANIKA MEHTA ✔ Get High Prof...parulsinha
 
(Low Rate RASHMI ) Rate Of Call Girls Jaipur ❣ 8445551418 ❣ Elite Models & Ce...
(Low Rate RASHMI ) Rate Of Call Girls Jaipur ❣ 8445551418 ❣ Elite Models & Ce...(Low Rate RASHMI ) Rate Of Call Girls Jaipur ❣ 8445551418 ❣ Elite Models & Ce...
(Low Rate RASHMI ) Rate Of Call Girls Jaipur ❣ 8445551418 ❣ Elite Models & Ce...parulsinha
 
Coimbatore Call Girls in Thudiyalur : 7427069034 High Profile Model Escorts |...
Coimbatore Call Girls in Thudiyalur : 7427069034 High Profile Model Escorts |...Coimbatore Call Girls in Thudiyalur : 7427069034 High Profile Model Escorts |...
Coimbatore Call Girls in Thudiyalur : 7427069034 High Profile Model Escorts |...chennailover
 
Call Girl In Pune 👉 Just CALL ME: 9352988975 💋 Call Out Call Both With High p...
Call Girl In Pune 👉 Just CALL ME: 9352988975 💋 Call Out Call Both With High p...Call Girl In Pune 👉 Just CALL ME: 9352988975 💋 Call Out Call Both With High p...
Call Girl In Pune 👉 Just CALL ME: 9352988975 💋 Call Out Call Both With High p...chetankumar9855
 
Call Girls Rishikesh Just Call 8250077686 Top Class Call Girl Service Available
Call Girls Rishikesh Just Call 8250077686 Top Class Call Girl Service AvailableCall Girls Rishikesh Just Call 8250077686 Top Class Call Girl Service Available
Call Girls Rishikesh Just Call 8250077686 Top Class Call Girl Service AvailableDipal Arora
 
Call Girls Madurai Just Call 9630942363 Top Class Call Girl Service Available
Call Girls Madurai Just Call 9630942363 Top Class Call Girl Service AvailableCall Girls Madurai Just Call 9630942363 Top Class Call Girl Service Available
Call Girls Madurai Just Call 9630942363 Top Class Call Girl Service AvailableGENUINE ESCORT AGENCY
 
Low Rate Call Girls Bangalore {7304373326} ❤️VVIP NISHA Call Girls in Bangalo...
Low Rate Call Girls Bangalore {7304373326} ❤️VVIP NISHA Call Girls in Bangalo...Low Rate Call Girls Bangalore {7304373326} ❤️VVIP NISHA Call Girls in Bangalo...
Low Rate Call Girls Bangalore {7304373326} ❤️VVIP NISHA Call Girls in Bangalo...Sheetaleventcompany
 
Call Girls Amritsar Just Call 8250077686 Top Class Call Girl Service Available
Call Girls Amritsar Just Call 8250077686 Top Class Call Girl Service AvailableCall Girls Amritsar Just Call 8250077686 Top Class Call Girl Service Available
Call Girls Amritsar Just Call 8250077686 Top Class Call Girl Service AvailableDipal Arora
 
Premium Call Girls In Jaipur {8445551418} ❤️VVIP SEEMA Call Girl in Jaipur Ra...
Premium Call Girls In Jaipur {8445551418} ❤️VVIP SEEMA Call Girl in Jaipur Ra...Premium Call Girls In Jaipur {8445551418} ❤️VVIP SEEMA Call Girl in Jaipur Ra...
Premium Call Girls In Jaipur {8445551418} ❤️VVIP SEEMA Call Girl in Jaipur Ra...parulsinha
 
Call Girls Kolkata Kalikapur 💯Call Us 🔝 8005736733 🔝 💃 Top Class Call Girl Se...
Call Girls Kolkata Kalikapur 💯Call Us 🔝 8005736733 🔝 💃 Top Class Call Girl Se...Call Girls Kolkata Kalikapur 💯Call Us 🔝 8005736733 🔝 💃 Top Class Call Girl Se...
Call Girls Kolkata Kalikapur 💯Call Us 🔝 8005736733 🔝 💃 Top Class Call Girl Se...Namrata Singh
 
Jogeshwari ! Call Girls Service Mumbai - 450+ Call Girl Cash Payment 90042684...
Jogeshwari ! Call Girls Service Mumbai - 450+ Call Girl Cash Payment 90042684...Jogeshwari ! Call Girls Service Mumbai - 450+ Call Girl Cash Payment 90042684...
Jogeshwari ! Call Girls Service Mumbai - 450+ Call Girl Cash Payment 90042684...Anamika Rawat
 
Call Girls in Delhi Triveni Complex Escort Service(🔝))/WhatsApp 97111⇛47426
Call Girls in Delhi Triveni Complex Escort Service(🔝))/WhatsApp 97111⇛47426Call Girls in Delhi Triveni Complex Escort Service(🔝))/WhatsApp 97111⇛47426
Call Girls in Delhi Triveni Complex Escort Service(🔝))/WhatsApp 97111⇛47426jennyeacort
 
Mumbai ] (Call Girls) in Mumbai 10k @ I'm VIP Independent Escorts Girls 98333...
Mumbai ] (Call Girls) in Mumbai 10k @ I'm VIP Independent Escorts Girls 98333...Mumbai ] (Call Girls) in Mumbai 10k @ I'm VIP Independent Escorts Girls 98333...
Mumbai ] (Call Girls) in Mumbai 10k @ I'm VIP Independent Escorts Girls 98333...Ishani Gupta
 
Call Girls Ahmedabad Just Call 9630942363 Top Class Call Girl Service Available
Call Girls Ahmedabad Just Call 9630942363 Top Class Call Girl Service AvailableCall Girls Ahmedabad Just Call 9630942363 Top Class Call Girl Service Available
Call Girls Ahmedabad Just Call 9630942363 Top Class Call Girl Service AvailableGENUINE ESCORT AGENCY
 
Premium Bangalore Call Girls Jigani Dail 6378878445 Escort Service For Hot Ma...
Premium Bangalore Call Girls Jigani Dail 6378878445 Escort Service For Hot Ma...Premium Bangalore Call Girls Jigani Dail 6378878445 Escort Service For Hot Ma...
Premium Bangalore Call Girls Jigani Dail 6378878445 Escort Service For Hot Ma...tanya dube
 
Call Girls Mumbai Just Call 8250077686 Top Class Call Girl Service Available
Call Girls Mumbai Just Call 8250077686 Top Class Call Girl Service AvailableCall Girls Mumbai Just Call 8250077686 Top Class Call Girl Service Available
Call Girls Mumbai Just Call 8250077686 Top Class Call Girl Service AvailableDipal Arora
 
Kollam call girls Mallu aunty service 7877702510
Kollam call girls Mallu aunty service 7877702510Kollam call girls Mallu aunty service 7877702510
Kollam call girls Mallu aunty service 7877702510Vipesco
 
Call Girls Hyderabad Just Call 8250077686 Top Class Call Girl Service Available
Call Girls Hyderabad Just Call 8250077686 Top Class Call Girl Service AvailableCall Girls Hyderabad Just Call 8250077686 Top Class Call Girl Service Available
Call Girls Hyderabad Just Call 8250077686 Top Class Call Girl Service AvailableDipal Arora
 
💕SONAM KUMAR💕Premium Call Girls Jaipur ↘️9257276172 ↙️One Night Stand With Lo...
💕SONAM KUMAR💕Premium Call Girls Jaipur ↘️9257276172 ↙️One Night Stand With Lo...💕SONAM KUMAR💕Premium Call Girls Jaipur ↘️9257276172 ↙️One Night Stand With Lo...
💕SONAM KUMAR💕Premium Call Girls Jaipur ↘️9257276172 ↙️One Night Stand With Lo...khalifaescort01
 
Call Girls Jaipur Just Call 9521753030 Top Class Call Girl Service Available
Call Girls Jaipur Just Call 9521753030 Top Class Call Girl Service AvailableCall Girls Jaipur Just Call 9521753030 Top Class Call Girl Service Available
Call Girls Jaipur Just Call 9521753030 Top Class Call Girl Service AvailableJanvi Singh
 

Último (20)

Independent Call Girls In Jaipur { 8445551418 } ✔ ANIKA MEHTA ✔ Get High Prof...
Independent Call Girls In Jaipur { 8445551418 } ✔ ANIKA MEHTA ✔ Get High Prof...Independent Call Girls In Jaipur { 8445551418 } ✔ ANIKA MEHTA ✔ Get High Prof...
Independent Call Girls In Jaipur { 8445551418 } ✔ ANIKA MEHTA ✔ Get High Prof...
 
(Low Rate RASHMI ) Rate Of Call Girls Jaipur ❣ 8445551418 ❣ Elite Models & Ce...
(Low Rate RASHMI ) Rate Of Call Girls Jaipur ❣ 8445551418 ❣ Elite Models & Ce...(Low Rate RASHMI ) Rate Of Call Girls Jaipur ❣ 8445551418 ❣ Elite Models & Ce...
(Low Rate RASHMI ) Rate Of Call Girls Jaipur ❣ 8445551418 ❣ Elite Models & Ce...
 
Coimbatore Call Girls in Thudiyalur : 7427069034 High Profile Model Escorts |...
Coimbatore Call Girls in Thudiyalur : 7427069034 High Profile Model Escorts |...Coimbatore Call Girls in Thudiyalur : 7427069034 High Profile Model Escorts |...
Coimbatore Call Girls in Thudiyalur : 7427069034 High Profile Model Escorts |...
 
Call Girl In Pune 👉 Just CALL ME: 9352988975 💋 Call Out Call Both With High p...
Call Girl In Pune 👉 Just CALL ME: 9352988975 💋 Call Out Call Both With High p...Call Girl In Pune 👉 Just CALL ME: 9352988975 💋 Call Out Call Both With High p...
Call Girl In Pune 👉 Just CALL ME: 9352988975 💋 Call Out Call Both With High p...
 
Call Girls Rishikesh Just Call 8250077686 Top Class Call Girl Service Available
Call Girls Rishikesh Just Call 8250077686 Top Class Call Girl Service AvailableCall Girls Rishikesh Just Call 8250077686 Top Class Call Girl Service Available
Call Girls Rishikesh Just Call 8250077686 Top Class Call Girl Service Available
 
Call Girls Madurai Just Call 9630942363 Top Class Call Girl Service Available
Call Girls Madurai Just Call 9630942363 Top Class Call Girl Service AvailableCall Girls Madurai Just Call 9630942363 Top Class Call Girl Service Available
Call Girls Madurai Just Call 9630942363 Top Class Call Girl Service Available
 
Low Rate Call Girls Bangalore {7304373326} ❤️VVIP NISHA Call Girls in Bangalo...
Low Rate Call Girls Bangalore {7304373326} ❤️VVIP NISHA Call Girls in Bangalo...Low Rate Call Girls Bangalore {7304373326} ❤️VVIP NISHA Call Girls in Bangalo...
Low Rate Call Girls Bangalore {7304373326} ❤️VVIP NISHA Call Girls in Bangalo...
 
Call Girls Amritsar Just Call 8250077686 Top Class Call Girl Service Available
Call Girls Amritsar Just Call 8250077686 Top Class Call Girl Service AvailableCall Girls Amritsar Just Call 8250077686 Top Class Call Girl Service Available
Call Girls Amritsar Just Call 8250077686 Top Class Call Girl Service Available
 
Premium Call Girls In Jaipur {8445551418} ❤️VVIP SEEMA Call Girl in Jaipur Ra...
Premium Call Girls In Jaipur {8445551418} ❤️VVIP SEEMA Call Girl in Jaipur Ra...Premium Call Girls In Jaipur {8445551418} ❤️VVIP SEEMA Call Girl in Jaipur Ra...
Premium Call Girls In Jaipur {8445551418} ❤️VVIP SEEMA Call Girl in Jaipur Ra...
 
Call Girls Kolkata Kalikapur 💯Call Us 🔝 8005736733 🔝 💃 Top Class Call Girl Se...
Call Girls Kolkata Kalikapur 💯Call Us 🔝 8005736733 🔝 💃 Top Class Call Girl Se...Call Girls Kolkata Kalikapur 💯Call Us 🔝 8005736733 🔝 💃 Top Class Call Girl Se...
Call Girls Kolkata Kalikapur 💯Call Us 🔝 8005736733 🔝 💃 Top Class Call Girl Se...
 
Jogeshwari ! Call Girls Service Mumbai - 450+ Call Girl Cash Payment 90042684...
Jogeshwari ! Call Girls Service Mumbai - 450+ Call Girl Cash Payment 90042684...Jogeshwari ! Call Girls Service Mumbai - 450+ Call Girl Cash Payment 90042684...
Jogeshwari ! Call Girls Service Mumbai - 450+ Call Girl Cash Payment 90042684...
 
Call Girls in Delhi Triveni Complex Escort Service(🔝))/WhatsApp 97111⇛47426
Call Girls in Delhi Triveni Complex Escort Service(🔝))/WhatsApp 97111⇛47426Call Girls in Delhi Triveni Complex Escort Service(🔝))/WhatsApp 97111⇛47426
Call Girls in Delhi Triveni Complex Escort Service(🔝))/WhatsApp 97111⇛47426
 
Mumbai ] (Call Girls) in Mumbai 10k @ I'm VIP Independent Escorts Girls 98333...
Mumbai ] (Call Girls) in Mumbai 10k @ I'm VIP Independent Escorts Girls 98333...Mumbai ] (Call Girls) in Mumbai 10k @ I'm VIP Independent Escorts Girls 98333...
Mumbai ] (Call Girls) in Mumbai 10k @ I'm VIP Independent Escorts Girls 98333...
 
Call Girls Ahmedabad Just Call 9630942363 Top Class Call Girl Service Available
Call Girls Ahmedabad Just Call 9630942363 Top Class Call Girl Service AvailableCall Girls Ahmedabad Just Call 9630942363 Top Class Call Girl Service Available
Call Girls Ahmedabad Just Call 9630942363 Top Class Call Girl Service Available
 
Premium Bangalore Call Girls Jigani Dail 6378878445 Escort Service For Hot Ma...
Premium Bangalore Call Girls Jigani Dail 6378878445 Escort Service For Hot Ma...Premium Bangalore Call Girls Jigani Dail 6378878445 Escort Service For Hot Ma...
Premium Bangalore Call Girls Jigani Dail 6378878445 Escort Service For Hot Ma...
 
Call Girls Mumbai Just Call 8250077686 Top Class Call Girl Service Available
Call Girls Mumbai Just Call 8250077686 Top Class Call Girl Service AvailableCall Girls Mumbai Just Call 8250077686 Top Class Call Girl Service Available
Call Girls Mumbai Just Call 8250077686 Top Class Call Girl Service Available
 
Kollam call girls Mallu aunty service 7877702510
Kollam call girls Mallu aunty service 7877702510Kollam call girls Mallu aunty service 7877702510
Kollam call girls Mallu aunty service 7877702510
 
Call Girls Hyderabad Just Call 8250077686 Top Class Call Girl Service Available
Call Girls Hyderabad Just Call 8250077686 Top Class Call Girl Service AvailableCall Girls Hyderabad Just Call 8250077686 Top Class Call Girl Service Available
Call Girls Hyderabad Just Call 8250077686 Top Class Call Girl Service Available
 
💕SONAM KUMAR💕Premium Call Girls Jaipur ↘️9257276172 ↙️One Night Stand With Lo...
💕SONAM KUMAR💕Premium Call Girls Jaipur ↘️9257276172 ↙️One Night Stand With Lo...💕SONAM KUMAR💕Premium Call Girls Jaipur ↘️9257276172 ↙️One Night Stand With Lo...
💕SONAM KUMAR💕Premium Call Girls Jaipur ↘️9257276172 ↙️One Night Stand With Lo...
 
Call Girls Jaipur Just Call 9521753030 Top Class Call Girl Service Available
Call Girls Jaipur Just Call 9521753030 Top Class Call Girl Service AvailableCall Girls Jaipur Just Call 9521753030 Top Class Call Girl Service Available
Call Girls Jaipur Just Call 9521753030 Top Class Call Girl Service Available
 

Notas del editor

  1. Hockey stick
  2. Cross-tabulated by a limited number of variables Age group, 1st 3 digits of zip code, date of ED visit Temperature and disposition (hospital admission) where possible (proxy measures of illness severity) Draws on state/local familiarity with: Local language/lingo and health care services Calibration of ILI syndromic criteria to optimize alignment of observed trends with other local influenza markers
  3. The figure represents 36 health departments currently sending data to Distribute. Based on these comparisons of 12-month baseline (pre-H1N1) ED visits at these health departments and data from the 2007 American Hospital Association (AHA) survey, which provides data on total ED visits for all hospitals by state, county, or city, we estimate that EDs represented in Distribute account for >35% of all ED visits for the 10 HHS regions in the United States , ranging from ~70% for Region 2 to <10% for Region 9. This value is expressed as a ratio rather than as a percentage since time periods represented by numerator (Distribute data) and denominator (AHA survey data for all sites except for OK city where we estimated number of visits per month based on the metadata on the Distribute website) differ.