The COVID-19 viral load in urban sewage showed rising trends in many areas of Greece being monitored by the National Public Health Organisation's national network for monitoring sewage viral loads between February 22-28, concerning February 15-21.
The only exception was in the Attica Region.
According to an announcement on Wednesday, Attica levels appeared to be stabilising during that period, with a fluctuation of just -3 per cent but continued to be high.
The increases seen in other areas ranged from 66 per cent in Larisa to 337 per cent in Rethymno, Crete.
Other areas, such as Agios Nikolaos in Crete, stayed essentially stable (+2 pct).
In contrast, others saw marginal increases, such as Thessaloniki (10 per cent) and Patras (15 per cent), within the test's margin of error.