Can you rely on reported cases? It all really depends on testing, doesn’t it? If people don’t get tested, the reported cases will be lower than reality and everyone breathes a sigh of relief. But if there’s traces in the sewage, we know it’s in the community – just don’t know who or exactly where.
Health authorities have issued an urgent warning for tens of thousands of Sydney residents, after fragments of Covid-19 were found in a sewerage network.