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Fork of ILINet Flu Surveillance Data

✓ Published1🌍 Public
SShan Gao
Last edited May 5, 2021
Created on May 5, 2021

This line chart visualizes annual ILI total flu cases in the U.S. from 2015 to 2019, with each year’s curve showing weekly case counts to compare season patterns year-over-year. The visualization uses an unordered color scale for the ordered year field, making it difficult to discern temporal progression. Built with Vega-Lite API and D3.js, it aggregates ILITOTAL by year, week, and region from CDC FluView data, rendering lines with a width based on window size and configuring axes and tooltips.

AI-generated description

This variant of the original work by Yu Zhang demonstrates improper use of an unordered color encoding for an ordered field (year), which makes it more difficult to read the chart, because you can't say anything like "darker is more recent".

A visualization constructed using the vega-lite-api.

This graph shows the national ILI total cases annually. The curves from 2015 to 2019 to the present date are displayed. This plot achieves the visualization of the annual ILI total patterns in general, and also provide a direct comparison year-over-year. We can tell 2018 is the year with highest Flu cases in mid February time, while 2019 has a more stretched Flu season comparing to other years.

When interations are introduced for the visualization together with Choropleths Map, we can select the individual yearly curve and present the map for that given year. We can also select a region or state and present a different portion of the dataset here to see more localized patterns.

See Data on Gist: ILINet Flu Surveillance Data

The original data comes from the CDC FluView Interactive

MIT Licensed

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