virus Particles are destroyed in the water fast enough and not threatening to people or animals.
TASS, 6 may. the Doctors from Italy have traced the spread of the coronavirus, a new type of sewage of Milan and came to the conclusion that he could get through them in rivers, lakes and other bodies of water, but not threatening human and natural ecosystems. The preliminary results are published in the electronic scientific library medRxiv.
“Despite the fact that we found no trace of viral RNA in the treated wastewater, traces of the virus in mid-April was attended by the rivers Lambro and southern Lambro. This suggests that part of the wastewater is discharged into rivers without treatment. On the other hand, the tests showed that the virus was not viable, which means minimal risks for ecosystems and human health,” the scientists write.
in the first weeks of the outbreak of coronavirus infection, the doctors and biologists have found that a waste of human life contains many particles of SARS-CoV-2. Subsequently, scientists have linked this feature with some cases of infection in Singapore, which was caused by a malfunction of the ventilation of the toilets.
Italian researchers from the University of Milan and Institute for the study of water in Brugherio held one of the first studies of this kind.
To do this, throughout April, the experts studied the water samples from the sewage of Milan, with its wastewater treatment plant and two nearby rivers Lambro Lambro and South, which flow through the suburbs of this city or its territory. Doctors are not only looking for traces of viral RNA in the isolated viral particles and evaluated their viability.
the Analysis confirmed the measurements of other scientists, which found a clear relationship between the level and pace of the epidemic coronavirus infection and how many virus particles were in the wastewater of other European cities. In particular, in the sewers of Milan had a lot of virus particles in each milliliter of water, scientists have found several thousand copies of virus RNA. This is understandable, given the huge number of infections in Northern Italy.
Despite this, the viability of virus particles was quite low.
In turn, chlorine compounds, cleared the water of all genetic traces of SARS-CoV-2. Despite this, scientists have recorded traces of RNA of the coronavirus in the two rivers in the middle of April, and at the end of the month — just in the river Lambro. As suggested by the doctors, this can be explained by leakage of sewage from the sewer when it overflows or not enough effective cleaning at some stations.
Experiments on cell cultures showed that the virus particles in the river waters do not threaten the animals and residents of coastal areasV. on the other hand, scientists offer a comprehensive study of the possible sources of these particles to prevent possible problems when you receive the following major epidemics in Northern Italy in the future.