Survival of surrogate coronaviruses in water
Identifieur interne : 002F05 ( Main/Exploration ); précédent : 002F04; suivant : 002F06Survival of surrogate coronaviruses in water
Auteurs : Lisa Casanova [États-Unis] ; William A. Rutala [États-Unis] ; David J. Weber [États-Unis] ; Mark D. Sobsey [États-Unis]Source :
- Water research : (Oxford) [ 0043-1354 ] ; 2009.
Descripteurs français
- KwdFr :
- MESH :
- isolement et purification : Virus de l'hépatite murine, Virus de la gastroentérite transmissible.
- physiologie : Virus de l'hépatite murine, Virus de la gastroentérite transmissible.
- virologie : Eaux d'égout.
- Pascal (Inist)
- Wicri :
- topic : Eau usée, Santé publique, Aérosol.
English descriptors
- KwdEn :
- Aerosols, Air pollution, Droplet, Health and environment, Murine hepatitis virus (isolation & purification), Murine hepatitis virus (physiology), Public health, Sewage (virology), Transmissible gastroenteritis virus (isolation & purification), Transmissible gastroenteritis virus (physiology), Waste water, Water Microbiology, Water pollution.
- 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 °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 °C, there was <1 log10 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.
Affiliations:
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Le document en format XML
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<term>Air pollution</term>
<term>Droplet</term>
<term>Health and environment</term>
<term>Murine hepatitis virus (isolation & purification)</term>
<term>Murine hepatitis virus (physiology)</term>
<term>Public health</term>
<term>Sewage (virology)</term>
<term>Transmissible gastroenteritis virus (isolation & purification)</term>
<term>Transmissible gastroenteritis virus (physiology)</term>
<term>Waste water</term>
<term>Water Microbiology</term>
<term>Water pollution</term>
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<term>Microbiologie de l'eau</term>
<term>Virus de l'hépatite murine (isolement et purification)</term>
<term>Virus de l'hépatite murine (physiologie)</term>
<term>Virus de la gastroentérite transmissible (isolement et purification)</term>
<term>Virus de la gastroentérite transmissible (physiologie)</term>
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<keywords scheme="MESH" type="chemical" qualifier="virology" xml:lang="en"><term>Sewage</term>
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<keywords scheme="MESH" qualifier="isolation & purification" xml:lang="en"><term>Murine hepatitis virus</term>
<term>Transmissible gastroenteritis virus</term>
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<term>Virus de la gastroentérite transmissible</term>
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<term>Virus de la gastroentérite transmissible</term>
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<keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Murine hepatitis virus</term>
<term>Transmissible gastroenteritis virus</term>
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<keywords scheme="MESH" qualifier="virologie" xml:lang="fr"><term>Eaux d'égout</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 °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 °C, there was <1 log<sub>10</sub>
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>
</front>
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<affiliations><list><country><li>États-Unis</li>
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<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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<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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