Vigia System


Vigía is the system for detection, surveillance and visualization of SARS-CoV-2 (the virus that causes 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 almost the entire population of the Region monitored; quantification of the presence of SARS-CoV-2 by basins; normalization of results; trend analysis; data screening for quality criteria; spatial distribution by municipalities and districts and distributed analysis of results.




Did you know?

The detection of SARS-CoV-2 in wastewater (which is deactivated) is a complementary tool for decision-making by the corresponding health authority. The analysis of the results of this work without taking into account medical data is not adequate. The results must be analyzed with the appropriate precautions and with knowledge in the matter, since the quantification of the presence of SARS-CoV-2 in the wastewater is affected by multiple factors (pollution, flows, rainfall, extraordinary discharges, time of data collection...).

The sewerage basins do not coincide with the administrative divisions, therefore the aggregation of results by municipality / district is indicative.

A single relationship cannot be established between the value of SARS-CoV2 in wastewater and the number of infected, since it will depend on the virulence of the infection in each patient, so that in Vigía, absolute values are not shown, but trends .

Due to the necessary consolidation of data that is carried out weekly, it is possible that small modifications in the general curve will be made in the week after its publication.

What will the Vigía map show?

The following 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 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.


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