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COVID-19 Data Visualizations

for TN.cz

# Data Visualization

TN CZ

2020

datova-vizualizace-covid-pro-tn-cz-uvod

Data for 1.5 million visitors in two days. The tn.cz portal needed interactive COVID-19 data visualizations delivered under extreme time pressure.

1,5 mil.

monthly visits

2 dny

from brief to deployment

Real-time

automatic data updates

1.5M monthly visitors

Za dva dny data pro

The TN.cz portal is one of the most visited news websites in the Czech Republic, with 1.5 million monthly visitors. Speed and reliability of data visualizations were therefore critical requirements from day one.

Vaccination overview in the Czech Republic

Fast analysis

and rapid delivery

We rapidly analyzed publicly available data sources, tested their functionality, and identified viable integration points. Within two days of receiving the brief, the first interactive visualizations were live on TN.cz.

Tracking the number

of positive cases

One of the key visualizations was an interactive chart tracking the number of positive COVID-19 cases. Users could monitor daily and cumulative counts, filter by region, and compare trends over time.

Live map

of cases by district

An interactive map let visitors check the current situation in their region. The visualization covered the distribution of cases, hospitalizations, and vaccination progress across all districts of the Czech Republic.

Vaccination overview

and hospitalizations

As the pandemic evolved, we expanded the visualizations to include a vaccination overview for the Czech Republic and the proportion of hospitalized patients relative to total case counts.

Cases by gender and age

Case count vs. COVID deaths

How we worked

Rapid delivery of interactive visualizations for the most visited news portal in the Czech Republic.

1

Analysis of public data sources

We rapidly analyzed publicly available COVID data sources, tested their reliability, and identified viable integration options for real-time visualization.
2

Design and development of interactive visualizations

We designed and developed a set of interactive charts, maps, and dashboards that process public data in real time and present it in an accessible, visual format.
3

Optimization for high traffic loads

We optimized the solution for millions of monthly visits. The visualizations are designed to be embedded as iframes across multiple news pages without performance degradation.
4

Deployment and ongoing enhancements

Within two days of receiving the brief, the solution was live on tn.cz. As the pandemic evolved, we continuously expanded the visualizations with new data sets and chart types.
React
React
PHP
PHP
Symfony
Symfony
Docker
Docker
HTML
HTML 5
Typescript
TypeScript

Technologies we used

The COVID-19 data visualizations for TN.cz are built on React for interactive charts with a PHP/Symfony backend. The solution processes data from public APIs in real time.

Services and products

we delivered

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