About
The University of Maryland Social Data Science Center Global COVID-19 Trends and Impact Survey, in partnership with Facebook is a partnership between Facebook and 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 is available for researchers via data use agreements. Over half a million responses are collected daily.
Data for the United States is not included in the Global COVID-19 Trends and Impact Survey but is available at covidcast.cmu.edu
Documentation
Overview of Survey Design: Partnering with Facebook on a University-based Rapid Turn-around Global SurveyDetailed Methodology: User Guide for the COVID-19 Trends and Impact Survey Weights (updated May 2022)
Survey Limitations: Survey limitations page on Open Data API website
Data
UMD Global CTIS Microdata Repository
Data repository for daily individual survey responses with survey variables and weights.
Go to microdata repoUMD Global CTIS Contingency Tables
Weekly and monthly pooled aggregate estimates that are broken out by socio-demographic groups.
Go to Contingency TablesUMD Researchers
Frauke Kreuter
Professor
Director of Joint Program in Survey Methodology
Kathleen Stewart
Professor
Director of the Center for Geospatial Information Science