The Global COVID-19 Trends and Impact Survey Open Data API

An Open API to access aggregated data for the University of Maryland Social Data Science Center Global COVID-19 Trends and Impact Survey, in partnership with Facebook.

Home Page Map Survey Results Microdata Contingency Tables Directory Contingency Tables Document

As of June 25, 2022, the COVID-19 Trends and Impact survey (CTIS) will no longer collect new survey data. Existing CTIS aggregate data will continue to be available on this site after data collection stops, and privacy-protected, non-aggregated data access will also continue to be available for eligible researchers at academic institutions and nonprofit organizations. Please reference the FAQ for additional information.

About

The University of Maryland Social Data Science Center Global COVID-19 Trends and Impact Survey, in partnership with Facebook (in short form as The Global COVID-19 Trends and Impact Survey or UMD Global CTIS) is a partnership between Facebook and other academic institutions. The survey is available in 56 languages. A representative sample of Facebook users is invited on a daily basis to report on topics including, for example, symptoms, social distancing behavior, vaccine acceptance, mental health issues, and financial constraints.

Facebook provides weights to reduce nonresponse and coverage bias. Country and region-level statistics are published daily via public API and dashboards, and microdata are available for researchers via data use agreements.

Over 200k responses are collected daily. After accounting for variance introduced by the survey weights, the effective sample size is still over 100k responses collected daily. Data for the United States is not included in the UMD Global CTIS but is available at covidcast.cmu.edu

Note: Aggregates for the API, map, and survey results page are shown for weighted countries only. Please find the complete list of countries that are weighted by Facebook here.
Microdata files include both weighted and unweighted countries. For more information on how to gain access to the microdata go here.

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