![COVID-19, Information Problems, and Digital Surveillance | Center for Global Development | Ideas to Action COVID-19, Information Problems, and Digital Surveillance | Center for Global Development | Ideas to Action](https://www.cgdev.org/sites/default/files/pisa-covid-surveillance-our-world-in-data-fig-2.png?itok=LOX9b7Th)
COVID-19, Information Problems, and Digital Surveillance | Center for Global Development | Ideas to Action
![A Covid-19 quartile comparison of official with excess mortality: Voice and accountability and the impact of vaccines | CEPR A Covid-19 quartile comparison of official with excess mortality: Voice and accountability and the impact of vaccines | CEPR](https://cepr.org/sites/default/files/styles/flexible_wysiwyg/public/image/FromMay2014/aizenman23febfig1.png?itok=LURgxAZ7)
A Covid-19 quartile comparison of official with excess mortality: Voice and accountability and the impact of vaccines | CEPR
![COVID-19, Information Problems, and Digital Surveillance | Center for Global Development | Ideas to Action COVID-19, Information Problems, and Digital Surveillance | Center for Global Development | Ideas to Action](https://www.cgdev.org/sites/default/files/styles/large/public/pisa-covid-surveillance-our-world-in-data-fig-1.png?itok=jEP5RcVP)
COVID-19, Information Problems, and Digital Surveillance | Center for Global Development | Ideas to Action
![Max Roser on building the world's first great source of COVID-19 data at Our World in Data - 80,000 Hours Max Roser on building the world's first great source of COVID-19 data at Our World in Data - 80,000 Hours](https://80000hours.org/wp-content/uploads/2021/06/Captura-de-Pantalla-2021-06-21-a-las-22.48.12.png)
Max Roser on building the world's first great source of COVID-19 data at Our World in Data - 80,000 Hours
![SAGE Research Methods: Data Visualization - Learn to Create a Pie Chart Using Python With Data From Our World in Data (2018) SAGE Research Methods: Data Visualization - Learn to Create a Pie Chart Using Python With Data From Our World in Data (2018)](https://pltfrmrsrcscdn.sagepub.com/srm/images/pie-chart-in-ourworldindata-2018/10.4135_9781529772197-fig1.jpg)
SAGE Research Methods: Data Visualization - Learn to Create a Pie Chart Using Python With Data From Our World in Data (2018)
![Max Roser on building the world's first great source of COVID-19 data at Our World in Data - 80,000 Hours Max Roser on building the world's first great source of COVID-19 data at Our World in Data - 80,000 Hours](https://80000hours.org/wp-content/uploads/2021/06/Captura-de-Pantalla-2021-06-21-a-las-17.38.55.png)