[ad_1]
Press room eleftherostypos.gr
The results of the laboratory tests of the National Wastewater Epidemiology Network for the epidemiological surveillance of the SARS-CoV-2 virus in urban wastewater for the period from March 8 to 14, 2021 were released.
The samples come from the Attica region and the cities of Thessaloniki, Larissa, Volos, Heraklion, Chania, Rethymnon, Agios Nikolaos and Patras. The samples are taken from the entrances of the respective Sewage Treatment Plants and correspond to the population served by them.
| Region / city | Percent change in mean weekly viral load |
| Attica | + 87% |
| Thessaloniki | + 74% |
| Larissa | + 41% |
| Marble | -7% |
| Heraklion | + 683% |
| Chania * | + 1000% |
| Rethymno * | + 136% |
| St nicolas | + 695% |
| Patras | + 3%
|
* Increase refers to the change in average viral load between weeks 22-28 / 2/21 and 8-14 / 3/21.
Conclusions: In the week of March 8-14, 2021, there are increasing trends compared to the week of March 1-7, 2021 in the viral load of SARS-CoV-2 in urban wastewater from most areas controlled by the EODY National Wastewater Epidemiology Network. These upward trends range from + 41% in Larissa to +1000% in Chania. The changes observed in Patras (+ 3%) and Volos (-7%) are considered marginal, where the viral load concentration in the wastewater remains substantially stable but at relatively high levels.
Region Attica: In the last week (8-14 / 3/21) in the Attica Region, there was an increase in the weekly average in the viral load of wastewater by 87%, while a relative stabilization was observed, always in high levels, in the last three weeks.
Thessaloniki: In the last week (8-14 / 3/21) in Thessaloniki there was an increase of the weekly average in the relative rate of secretion of viral load by 74%, compared to the week 1-7 / 3/2021. However, it is observed that the measurements of the last days (10/14/3/2021) show a slight de-escalation trend of the increase observed in the last two weeks.
Chania: In the last two weeks (1-14 / 3/21) there was an increase of the weekly average in the viral load of the wastewater by 1000%. It is observed that the viral load in the wastewater of Chania, before the strong increase of 15 days, was low.
Saint Nicholas: In the last week (8-14 / 3/21) in Agios Nikolaos Lassithi there was an increase of the weekly average in the viral load of wastewater by 695%, while stabilization was observed, at relatively low levels, in concentration. of viral load in wastewater last week, 1-7 / 3/21.
Patras: In the last week (8-14 / 3/21) in Patras there is a stabilization of the weekly average in the viral load of wastewater, in relation to the week 1-7 / 3/2021. However, it is observed that the measurements of the last days (10-14 / 3/2021) show a slight downward trend compared to the last two weeks.
Note 1: The previous trends have been calculated based on the viral load values, normalized to the equivalent population of the areas. The equivalent population is calculated based on the pollutant load that results in the respective wastewater treatment plant in duration 24 hours and typical pollutant load values per person per day.
Note 2: Changes of the order of +/- 30% are close to the uncertainty limits of the laboratory.
Note 3: The average viral load for Larissa, Volos, Heraklion, Agios Nikolaos and Patras, for the week of March 8-14, 2021, has been calculated based on measurements taken from March 8-12, 2021 due to the three days of carnival monday. The results for the Attica and Thessaloniki region correspond to measurements from 8 to 14 March 2021.
[ad_2]
