SARS-CoV-2 RNA is enriched in the solids fraction of wastewater

sars cov 2 rna is enriched in the solids fraction of wastewater

Sumary of SARS-CoV-2 RNA is enriched in the solids fraction of wastewater:

  • New research led by Alexandria Boehm of Stanford University in California shows that severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) ribonucleic acid (RNA) in wastewater can be detected by measuring solid samples and flowing sewage water samples.
  • SARS-CoV-2 RNA tends to cluster in small masses of solids, making direct extraction of nucleic acids possible when there are low viral RNA levels.
  • Both solid and liquid methods were sensitive enough to detect low levels of SARS-CoV-2 RNA.
  • Unless there are high COVID-19 caseloads in the surrounding community, the researchers note that wastewater should be processed beforehand if there are low concentrations of SARS-CoV-2 RNA in large volumes.
  • The study “SARS-CoV-2 RNA is enriched by orders of magnitude in solid relative to liquid wastewater at publicly owned treatment works” was recently published on the medRxiv* preprint server.
  • Study details The researchers measured the amount of SARS-CoV-2 RNA flowing in solid and raw sewage water from five publicly owned treatment works.
  • SARS-CoV-2 RNA levels were higher in solids by almost three to four orders of magnitude.
  • Previous research looking at bacteria and viruses in wastewater also showed a similar affinity towards wastewater solids.

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