Vigia System

Vigía is the system for detection, surveillance and visualization of SARS-CoV-2 (the virus that causes the COVID-19 disease) in wastewater. It is the largest analysis system in Spain and consists of: 289 sampling points; 15,000 km of sewerage network and the monitoring of almost the entire population of the Region; the quantification of the presence of SARS-CoV-2 by basins; the normalisation of results; trend analysis; data screening for quality criteria; spatial distribution by municipalities and districts and distributed analysis of results.

The map shows a color code quantifying the importance of the presence of SARS-CoV-2 based on: the trend in each municipality / district (ascending, descending ...); the absolute value compared to the historical data for this municipality / district.

By clicking on each municipality / district you will also be able to see:

• Name.
• Date of the last validated analysis.
• Indicator of evolution of the presence of SARS-CoV-2 in wastewater.
• Comparative value of the last data with respect to the previous ones of that same point.
• Classification of the observed trend.

Last update: 4/4/2024

Note: In periods of rain, the results in the wastewater can be affected by the dilution of the waters.

Given the evolution of the COVID-19 pandemic, the sampling frequency of wastewater related to SARS-CoV-2 has been reduced. Starting in April, the updating frequency of the presence map will be monthly.

However, a small network is maintained that, on a weekly basis, performs these same analysis as an early warning indicator and whose results will continue to be published in the weekly report. The reports that are uploaded to this website will have a curve that only represents these points of the permanent network, so the shape of the curve will vary.