The results of the laboratory tests of the National Network of Sewage Epidemiology for the epidemiological surveillance of the SARS-CoV-2 virus in urban wastewater, which operates under the coordination of EODY, are announced.
The samples come from the Attica Region and the cities of Thessaloniki, Larissa, Volos, Heraklion, Chania, Rethymnon, Agios Nikolaos Lassithi, Patras, Xanthi, Alexandroupolis and Ioannina. The samples are taken from the entrances of the local Wastewater Treatment Plants (WWUs) and correspond to the population served by them.
Region of Attica: In the last week, 17-23 / 01/22, the average weekly viral load in the urban wastewater of the Attica Region showed a downward trend, with a statistically significant decrease (-47%) of the weekly average compared to the previous week, 10-16 / 01/22.
The viral load of sewage in the Attica Region showed an increase from mid-September 2021 to the first week of November 2021, while the remaining weeks of November 2021 until the third week of December 2021 showed stabilizing trends at high levels. Then, the viral load of wastewater of the Attica Region showed a new large increase in the fourth week of December 2021 and the first of January 2022, recording the highest observed to date in the wastewater of the Attica Region, showed a stabilizing trend in the second week of January and downward trend in the third week of January.
Thessaloniki: In the last week, 17-23 / 01/22, the weekly average value of the viral load of urban wastewater in Thessaloniki showed a decrease (-41%) compared to the previous week, 10-16 / 01/22.
However, the viral load in the city’s urban wastewater remains high, although it decreased for the second consecutive week. Based on daily specific analyzes in the wastewater, it emerged that, in the last week, 17-23/01/2022, the viral load due to the Omicron strain was reduced by about half, while the viral load due to the Delta strain remained stable.
Larissa: In the last week, 17-23 / 01/22, the average weekly viral load of urban wastewater in Larissa showed a significant decrease (-50%) compared to the week 10-16 / 01/22. 8 Volos: In the last week, 17-23 / 01/22, the average weekly viral load of urban wastewater in Volos decreased (-31%) compared to the week 10-16 / 01/22.
Heraklion: In the last week, 17-23 / 01/22, in the city of Heraklion, the weekly average value of the viral load in the urban wastewater, showed a decrease (-47%) compared to the previous week, 10-16 / 01/22.
Chania: In the last week, 17-23 / 01/22, in the city of Chania, the weekly average value of the viral load of urban wastewater showed a decrease (-39%) compared to the previous week, 10-16 / 01/22.
Rethimno: In the last week, 17-23 / 01/22, in the city of Rethymno, a decrease (-68%) was recorded in the average value of the viral load of urban wastewater in relation to the week 10-16 / 01/22.
Saint Nicholas: In the last week, 17-23 / 01/22, in the city of Agios Nikolaos, the weekly average value of the viral load in the urban wastewater showed a decrease (-33%) compared to the previous week, 10-16 / 01/22.
Patras: In the last week, 17-23 / 01/22, in Patras, the average weekly viral load of urban wastewater remained stable (-1%) compared to the previous week, 10-16 / 01/22. The weekly average value of the viral load of urban wastewater is high.
Blonde: In the last week, 17-23 / 01/22, in Xanthi, the average weekly viral load of urban wastewater showed a marginal decrease (-18%) compared to the week 10-16 / 01/22.
Alexandroupolis: In the last week, 17-23 / 01/22, in Alexandroupolis, the average weekly viral load of urban wastewater showed a significant decrease (-39%) compared to the week 10-16 / 01/22.
Janina: In the last week, 17-23 / 01/22, in Ioannina, the average weekly viral load of urban wastewater showed a marginal decrease (-29%) compared to the previous week, 10-16 / 01/22.
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