Course Access
Hi Marg,
New publication posted on 13th March 2020.
Aerosol and surface stability of HCoV-19 (SARS-CoV-6 2) compared to
SARS-CoV-1
medRxiv preprint doi: https://doi.org/10.1101/2020.03.09.20033217
*”HCoV-19 (SARS-2) has caused >88,000 reported illnesses with a
current case-fatality ratio of ~2%. Here, we investigate the stability of
viable HCoV-19 on surfaces and in aerosols in comparison with SARS35 CoV-1.
Overall, stability is very similar between HCoV-19 and SARS-CoV-1. We found
that viable virus could be detected in aerosols up to 3 hours post
aerosolization, up to 4 hours on copper, up to 24 hours on cardboard and up
to 2-3 days on plastic and stainless steel. HCoV-19 and SARS-CoV-1 exhibited
similar half-lives in aerosols, with median estimates around 2.7 hours. Both
viruses show relatively long viability on stainless steel and polypropylene
compared to copper or cardboard: the median half-life estimate for HCoV-19
is around 13 hours on steel and around 16 hours on polypropylene. Our
results indicate that aerosol and fomite transmission of HCoV-19 is
plausible, as the virus can remain viable in aerosols for multiple hours and
on surfaces up to days.
Regards
Glenys
Glenys Harrington
Consultant
Infection Control Consultancy (ICC)
P.O. Box 6385
Melbourne
Australia, 3004
M: +61 404816434
marjenes@OPTUSNET.COM.AU
inanimate surfaces and its inactivation with biocidal agents
Glenys I noted 10 minutes is being recommended by our official feed but its
way less than that as you and I know
Regards,
Margaret Jennings
Marjen Education Services
website. http://www.marjenes.com.au
email. marjenes@optusnet.com.au
mob. 0404 088 754
> On Behalf Of Glenys Harrington
inanimate surfaces and its inactivation with biocidal agents
Dear All,
This publication (in press yesterday) notes the following in the summary:
*”The analysis of 22 studies reveals that human coronaviruses such as
Severe Acute Respiratory Syndrome (SARS) coronavirus, Middle East
Respiratory Syndrome (MERS) coronavirus or endemic human coronaviruses
(HCoV) can persist on inanimate surfaces like metal, glass or plastic for up
to 9 days, but can be efficiently inactivated by surface disinfection
procedures with 62-71% ethanol, 0.5% hydrogen peroxide or 0.1% sodium
hypochlorite within 1 minute”.
Kampf G, et al. Persistence of coronaviruses on inanimate surfaces and its
inactivation with biocidal agents, Journal of Hospital Infection, https://
doi.org/10.1016/j.jhin.2020.01.022.
May be of interest/use.
Regards
Glenys
Glenys Harrington
Consultant
Infection Control Consultancy (ICC)
P.O. Box 6385
Melbourne
Australia, 3004
M: +61 404816434
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