Reactivity of Enveloped Virus Genome, Proteins, and Lipids with Free Chlorine and UV254

The current understanding of SARS-CoV-2 is that waterborne transmission is unlikely to be an important mode of infection. While the virus RNA has been reported in untreated sewage (and many more such reports can be anticipated throughout 2020 and beyond), these reports do no imply that viable, infective virus is present. Very few studies haveContinue reading “Reactivity of Enveloped Virus Genome, Proteins, and Lipids with Free Chlorine and UV254”

Evaluation of Phi6 Persistence and Suitability as an Enveloped Virus Surrogate

Understanding the survival and fate of viruses, such as SARS-CoV-2 in water is important to enable us to model and predict exposure risks through contact with wastewater, environmental water systems and drinking water. In particular, it will be necessary to understand how variable factors such as temperature, pH, salinity, organic matter concentration, or other matrixContinue reading “Evaluation of Phi6 Persistence and Suitability as an Enveloped Virus Surrogate”

Survivability, Partitioning, and Recovery of Enveloped Viruses in Untreated Municipal Wastewater

This is a paper from the research team led by Associate Professor Krista Wigginton at the University of Michigan. Wigginton’s team have focused on the fate of enveloped viruses (including coronaviruses) in the urban water cycle (drinking water, sewage, sewage treatment) for much of the last decade. Most researchers studying viruses in water have focusedContinue reading “Survivability, Partitioning, and Recovery of Enveloped Viruses in Untreated Municipal Wastewater”

Survival of Coronaviruses in Water and Wastewater

This paper presents a study in the survival of two representative coronaviruses (feline infectious peritonitis virus, and human coronavirus 229E) in filtered and unfiltered tap water (4 and 23°C) and wastewater (23°C). The survival of these coronaviruses was compared to poliovirus 1 under the same test conditions. Inactivation of coronaviruses in the test water wasContinue reading “Survival of Coronaviruses in Water and Wastewater”

Effects of Air Temperature and Relative Humidity on Coronavirus Survival on Surfaces (2010)

This paper does not specifically address the fate of coronaviruses in water. But it reports some relevant facts that affect the survival of coronaviruses on surfaces. These are the importance of air temperature and relative humidity. This research was undertaken using surrogate viruses in order to avoid the challenges of working with the highly pathogenicContinue reading “Effects of Air Temperature and Relative Humidity on Coronavirus Survival on Surfaces (2010)”