Survival of surrogate coronaviruses in water.
Identifieur interne : 001951 ( PubMed/Corpus ); précédent : 001950; suivant : 001952Survival of surrogate coronaviruses in water.
Auteurs : Lisa Casanova ; William A. Rutala ; David J. Weber ; Mark D. SobseySource :
- Water research [ 0043-1354 ] ; 2009.
English descriptors
- KwdEn :
- MESH :
- chemical , virology : Sewage.
- isolation & purification : Murine hepatitis virus, Transmissible gastroenteritis virus.
- physiology : Murine hepatitis virus, Transmissible gastroenteritis virus.
- Water Microbiology.
Abstract
The emergence of a previously unknown coronavirus infection, Severe Acute Respiratory Syndrome (SARS), demonstrated that fecally contaminated liquid droplets are a potential vehicle for the spread of a respiratory virus to large numbers of people. To assess potential risks from this pathway, there is a need for surrogates for SARS coronavirus to provide representative data on viral survival in contaminated water. This study evaluated survival of two surrogate coronaviruses, transmissible gastroenteritis (TGEV) and mouse hepatitis (MHV). These viruses remained infectious in water and sewage for days to weeks. At 25 degrees C, time required for 99% reduction in reagent-grade water was 22 days for TGEV and 17 days for MHV. In pasteurized settled sewage, times for 99% reduction were 9 days for TGEV and 7 days for MHV. At 4 degrees C, there was <1 log(10) infectivity decrease for both viruses after four weeks. Coronaviruses can remain infectious for long periods in water and pasteurized settled sewage, suggesting contaminated water is a potential vehicle for human exposure if aerosols are generated.
DOI: 10.1016/j.watres.2009.02.002
PubMed: 19246070
Links to Exploration step
pubmed:19246070Le document en format XML
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<author><name sortKey="Casanova, Lisa" sort="Casanova, Lisa" uniqKey="Casanova L" first="Lisa" last="Casanova">Lisa Casanova</name>
<affiliation><nlm:affiliation>Department of Environmental Sciences and Engineering, University of North Carolina, Chapel Hill, NC 27599, USA. casanova@email.unc.edu</nlm:affiliation>
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<author><name sortKey="Rutala, William A" sort="Rutala, William A" uniqKey="Rutala W" first="William A" last="Rutala">William A. Rutala</name>
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<author><name sortKey="Weber, David J" sort="Weber, David J" uniqKey="Weber D" first="David J" last="Weber">David J. Weber</name>
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<author><name sortKey="Sobsey, Mark D" sort="Sobsey, Mark D" uniqKey="Sobsey M" first="Mark D" last="Sobsey">Mark D. Sobsey</name>
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<author><name sortKey="Weber, David J" sort="Weber, David J" uniqKey="Weber D" first="David J" last="Weber">David J. Weber</name>
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<term>Transmissible gastroenteritis virus (physiology)</term>
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<front><div type="abstract" xml:lang="en">The emergence of a previously unknown coronavirus infection, Severe Acute Respiratory Syndrome (SARS), demonstrated that fecally contaminated liquid droplets are a potential vehicle for the spread of a respiratory virus to large numbers of people. To assess potential risks from this pathway, there is a need for surrogates for SARS coronavirus to provide representative data on viral survival in contaminated water. This study evaluated survival of two surrogate coronaviruses, transmissible gastroenteritis (TGEV) and mouse hepatitis (MHV). These viruses remained infectious in water and sewage for days to weeks. At 25 degrees C, time required for 99% reduction in reagent-grade water was 22 days for TGEV and 17 days for MHV. In pasteurized settled sewage, times for 99% reduction were 9 days for TGEV and 7 days for MHV. At 4 degrees C, there was <1 log(10) infectivity decrease for both viruses after four weeks. Coronaviruses can remain infectious for long periods in water and pasteurized settled sewage, suggesting contaminated water is a potential vehicle for human exposure if aerosols are generated.</div>
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