"Si buscas la encuesta de Rivas y Arganda del Rey, sigue este enlace”
CoronaSurveys Project Summary
The CoronaSurveys project is a collaborative endeavour from several universities and research institutions (team members) Data about COVID-19 cases is collected via anonymous open surveys (all the data collected is openly available). The results below present estimations on the incidence and evolution of COVID-19 obtained from this data using the Network Scale-up Method. You can help by regularly completing the anonymous survey.
How It Works
1. Select Your Country
Select your country from the dropdown menu below, or Select it from the map (click here). This will take you to the survey in the appropriate language.


2. Complete The Survey
Complete the survey, which is very short. You can complete the survey multiple times (e.g. Daily or weekly). you can download a weekly reminder for your device here.
3. Share The Survey
We are a not for profit organisation and rely on volunteers and Ambassadors for our survey to be spread. If you would like to join us as an ambassador, please click here.
Select your country to take the survey:
Global estimates of active infectious cases obtained by CoronaSurveys
How can I help?
Please complete our surveys! Choose a country in which you have contacts, and tell us about the number of cases (suspected or confirmed) you know about. No personal information is stored in these surveys. Because each of us can provide information about the situation among our direct contacts, in aggregate we are able to get rough estimates of total cases.
Because we are tracking the evolution of this epidemic over time, once you have completed the survey, please remember to come back and update the survey at least once a week, or when the responses change. And finally, you can help us by asking your friends, colleagues and relatives to complete the survey as well! Thank you!
About the project
The world is suffering from a pandemic called COVID-19, caused by the SARS-CoV-2 virus. The different national governments have problems evaluating the reach of the epidemic, having limited resources and tests to their disposal. Hence, any means to evaluate the number of persons with symptoms compatible with COVID-19 with reasonable level of accuracy is useful.
The objective of this study is the collection and publication of data concerning the number of people that show symptoms compatible with COVID-19 in different countries. This data is useful to estimate the number of infected persons with the COVID-19 virus at a given point in time in these countries, and the evolution of this number over time, using techniques like the Network Scale-up Method.