CDC works 24/7 to protect America from health, safety and security threats, both foreign and in the U.S. Whether diseases start at home or abroad, are chronic or acute, curable or preventable, human error or deliberate attack, CDC fights disease and supports communities and citizens to do the same. As the nation’s health protection agency, CDC saves lives and protects people from health threats. To accomplish its mission, CDC conducts critical science and provides health information that protects against expensive and dangerous health threats, and responds when these arise.

This release contains total number of Hepatitis type A and B cases reported in the United States, by region and by states or territory. This table contains provisional cases of selected national notifiable diseases from the National Notifiable Diseases Surveillance System (NNDSS). The data is available for past 2 years. NNDSS data from the 50 states, New York City, the District of Columbia and the U.S. territories are collated and published weekly on the NNDSS Data and Statistics web page (https://wwwn.cdc.gov/nndss/data-and-statistics.html ). Cases reported by state health departments to CDC for weekly publication are provisional because of the time needed to complete case follow-up. Therefore, numbers presented in later weeks may reflect changes made to these counts as additional information becomes available. This data is anonymized/aggregated.

More Information:

• Source - Division of Health Informatics and Surveillance (DHIS), Centers for Disease Control and Prevention 
• Schema Definitions 
• Sample Dataset 
• Terms of Use 
• CDC Data Homepage 
• Frequency: Annual

What's included?

You will receive access to the following:

• Total number of Hepatitis Type A & B cases reported in the US (hepatitis-ab-cdc.csv)
• CloudFormation template that setups up automatic revision updates plus AWS analytics services such as AWS Glue and Amazon Athena (cloudformation.yaml)
• AWS Lambda code for revision updates (post-processing-code.zip)

Please note, in the post processing code, we use a Lambda layer that extends the AWS Python SDK (boto3) that is built into the Lambda Python runtime by adding the AWS Data Exchange and AWS Marketplace Catalog API SDKs as of November 13, 2019. Once the public SDKs are updated to include AWS Data Exchange APIs, we will update the code to remove this Lambda layer.

Deploy CloudFormation template to set up automatic revision updates and AWS Analytics services

Assuming you have subscribed to this product listing, below are the detailed steps to deploy CloudFormation template:

(Please note that you will need IAM permissions for CloudFormation, AWS Data Exchange, IAM, Lambda, Glue, Athena and QuickSight, in order to deploy the CloudFormation template.)

• Under the product listing, scroll down to Data sets section and click on the Data set name
• Under the Revisions section, click on the most recent revision
• Under Assets, checkmark hepatitis-ab-cdc/automation/post-processing-code.zip and click Export to S3
• Choose the S3 Bucket where you would like to store the dataset. Make sure you only choose the S3 bucket. The asset comes with a pre-defined directory structure
• Under Assets, checkmark hepatitis-ab-cdc/automation/cloudformation.yaml and click either Export to S3 or Export to computer
• If you exported the cloudformation.yaml to S3, go to the S3 UI on the AWS console and navigate to the location where the cloudformation.yaml is stored. In S3, click on the cloudformation.yaml and copy the url from the Object URL
• Now, from your AWS Management Console, log onto Amazon CloudFormation UI and click Create Stack
• Under Choose a template either provide the template via uploading from local computer or specify the S3 object url and click Next
• Provide a friendly stack name in the Stack name text box
• In the SourceS3Bucket field, input the S3 bucket name that you chose earlier to store the hepatitis-ab-cdc/automation/post-processing-code.zip file
• Leave rest of the fields as is
• Click Next
• In the Options screen, click Next
• Tick mark the I acknowledge that AWS CloudFormation might create IAM resources. box
• Click Create

At a high level, CloudFormation will setup following resources automatically.

• Lambda function to setup automatic AWS Data Exchange revision updates for this dataset
• CloudWatch Event rule that will automatically trigger the Lambda function every time a new revision update is published
• Another Lambda function to setup AWS Glue and Amazon Athena
• Necessary IAM roles and permissions

If you are interested in looking at the AWS Lambda code or the CloudFormation template, feel free to inspect files inside hepatitis-ab-cdc/automation/post-processing-code.zip and hepatitis-ab-cdc/automation/cloudformation.yaml

Analytics & Visualizations

Apart from the source data, what we are also providing in this product listing is an easy way to interact and extract value out of the dataset. Native AWS Analytics services such as AWS Glue, Amazon Athena and Amazon QuickSight provide different ways to interact and visualize the data. The included AWS CloudFormation template sets up AWS Glue and Amazon Athena automatically in your AWS account.

Data Analysis - This diagram shows how all the AWS services interact 

Using AWS Glue and Amazon Athena to run interactive queries against the dataset

Once the CloudFormation template is successfully deployed, the data is immediately searchable, queryable, and available on Athena. You can go to the Athena UI from the AWS Management Console and run SQL queries on the dataset.

Here are some sample Athena SQL queries you can try on the dataset.

# list total no. of Hepatitis type A weekly cases reported for year 2018

SELECT "reporting_area", "mmwr_year", "mmwr_week", "hepatitis_viral_acute_by_type_a_cum_2018" FROM "hepatitis_ab_cdc"."data" ORDER BY "hepatitis_viral_acute_by_type_a_cum_2018" DESC;

# compare total no. of Hepatitis type A & B cases reported for year 2018 based on weekly data

SELECT "reporting_area", "mmwr_year", "mmwr_week", "hepatitis_viral_acute_by_type_a_cum_2018", "hepatitis_viral_acute_by_type_b_cum_2018" FROM "hepatitis_ab_cdc"."data" ORDER BY "reporting_area" ASC;

Setup Amazon QuickSight to create visualizations on the dataset

Below are the detailed steps to analyze dataset using Amazon QuickSight

• From your AWS Management Console, log onto Amazon QuickSight
• Click Manage data
• Click New data set
• If you ran the provided CloudFormation template, you should already have your database and table with schema created in AWS Glue and Athena
• Click on Athena to connect to your data source
• Provide a name for your QuickSight Data source name and click Create data source
• In the Database: contain sets of table dropdown, choose database as hepatitis_ab_cdc and under Tables: contain the data you can visualize, choose table as data
• At this point, you can Edit/Preview data if you like
• You can then click on Select
• In the Finish data set creation screen, you can select Visualize to finish the creation of data set process
• Visualize the data set by selecting the Horizontal bar chart from the Visual types
• Drag reporting_area field to the Y axis in Field wells and for e.g. drag hepatitis_viral_acute_by_type_a_cum_2018 field in the Value block to chart the data

You are now ready to start analyzing and visualizing the dataset.

Contact Information

If you have questions about the source data, please contact cdcinfo@cdc.gov. If you have any questions about the CloudFormation stack, Lambda code or any of the AWS services being used, please contact data@rearc.io.

About Rearc

Rearc is a cloud, software and services company. We believe that empowering engineers drives innovation. Cloud-native architectures, modern software and data practices, and the ability to safely experiment can enable engineers to realize their full potential. We have partnered with several enterprises and startups to help them achieve agility. Our approach is simple — empower engineers with the best tools possible to make an impact within their industry.