Publications de Krista Rule Wigginton

Wastewater-Based Epidemiology: Global Collaborative to Maximize Contributions in the Fight Against COVID-19

Krista Rule Wigginton, Frederic Béen, Xavier Fernandez Cassi, Manish Kumar, Kevin Thomas

2020

The utility of flow cytometry for potable reuse

Tamar Kohn, Brian Pecson, Krista Rule Wigginton

Protecting public health from pathogens is critical when treating wastewater to drinking water standards (i.e., planned water reuse). Viruses are a principal concern, yet real-time monitoring strategies do not currently measure virus removal through reuse ...

2019

Sunlight-mediated inactivation of health-relevant microorganisms in water: A review of mechanisms and modeling approaches

Tamar Kohn, Krista Rule Wigginton, Yang Liu

Health-relevant microorganisms present in natural surface waters and engineered treatment systems that are exposed to sunlight can be inactivated by a complex set of interacting mechanisms. The net impact of sunlight depends on the solar spectral irradianc ...

2018

Subtle differences in virus composition affect disinfection kinetics and mechanisms

Anne Thérèse Sigstam, Michele Cascella, Tamar Kohn, Brian Pecson, Krista Rule Wigginton

Viral disinfection kinetics have been studied in depth, but the molecular-level inactivation mechanisms are not understood. Consequently, it is difficult to predict the disinfection behavior of non-culturable viruses, even when related, culturable viruses ...

American Society for Microbiology2013

UV radiation induces genome-mediated, site-specific cleavage in viral protein

Hisham Ben Hamidane, Anne Thérèse Sigstam, Michele Cascella, Tamar Kohn, Yury Tsybin, Laure Menin, Krista Rule Wigginton

Much research has been dedicated to understanding the molecular basis of UV damage to biomolecules, yet many questions remain regarding the specific pathways involved. Here we describe a genome-mediated mechanism that causes sitespecific virus protein clea ...

2012

Virus disinfection mechanisms: the role of virus composition, structure, and function

Tamar Kohn, Krista Rule Wigginton

Drinking waters are treated for enteric virus via a number of disinfection techniques including chemical oxidants, irradiation, and heat, however the inactivation mechanisms during disinfection remain elusive. Due to the fact that a number of significant w ...

Elsevier Sci Ltd2012

Virus inactivation mechanisms: impact of disinfectants on virus function and structural integrity

Anne Thérèse Sigstam, Tamar Kohn, Brian Pecson, Krista Rule Wigginton, Franziska Sara Bosshard

Oxidative processes are often harnessed as tools for pathogen disinfection. Although the pathways responsible for bacterial inactivation with various biocides are fairly well understood, virus inactivation mechanisms are often contradictory or equivocal. I ...

Amer Chemical Soc2012

Impact of virus aggregation on inactivation by peracetic acid and implications for other disinfectants

Benoît Crouzy, Michael Jon Mattle, Tamar Kohn, Paolo Perona, Moritz Brennecke, Krista Rule Wigginton

Viruses in wastewater and natural environments are often present as aggregates. The disinfectant dose required for their inactivation, however, is typically determined with dispersed viruses. This study investigates how aggregation affects virus inactivati ...

2011

Oxidation of Virus Proteins during UV(254) and Singlet Oxygen Mediated Inactivation

Tamar Kohn, Jonathan Paz Montoya, Krista Rule Wigginton

Despite the widespread use of UV254 irradiation and solar disinfection for water treatment, little is known about the photochemical pathways that lead to virus inactivation by these treatments. The goal of this study was to identify reactions that occur in ...

2010