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 Below are comments from health officials, doctors and other experts
on the risk of infection from eating or handling frozen or chilled
food.
WU ZUNYOU, CHIEF EPIDEMIOLOGIST OF CHINA'S CENTER FOR DISEASES
PREVENTION AND CONTROL
Wu told state media over the weekend that the virus can survive on
the surface of frozen food for up to three months and his agency
"highly suspects" contaminated goods were the source of the latest
outbreak.
But he said more investigation was necessary, as it was possible
infected people arriving in Beijing could have spread it.
JIN DONG-YUN, VIROLOGY PROFESSOR AT THE UNIVERSITY OF HONG KONG
Virus contraction via frozen food usually involves viruses such as
the rotavirus and hepatitis A virus being transmitted through the
gastrointestinal tract.
It typically happens with contaminated food consumption, which is
not the route through which respiratory viruses infect people.
SARS-CoV-2 is not known to be transmitted via consumption of
contaminated food.
It requires further investigation to determine whether a person can
contract the coronavirus either by touching contaminated surface or
via direct food consumption.
EYAL LESHEM, DIRECTOR OF THE CENTER FOR TRAVEL MEDICINE AND TROPICAL
DISEASES, SHEBA MEDICAL CENTER, ISRAEL
There is no evidence of novel coronavirus transmission through food,
food containers or food packaging. The vast majority of infections
occur due to close contact with infectious patients.
Infection from fresh food like meat and fish may occur if a kitchen
worker or waiter goes to work while ill and touches the food, thus
transmitting the virus.
We think risk from frozen food is very low when proper food
preparation guidelines are kept.
PAUL TAMBYAH, PRESIDENT OF THE ASIA PACIFIC SOCIETY OF CLINICAL
MICROBIOLOGY AND INFECTIOUS DISEASES
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A group from Hong Kong has shown that the survival of the virus is
significantly altered by temperature and humidity. It has said in a
preliminary report that the virus can survive for only a day at 37
Celsius (98 Fahrenheit), compared with a week at 22C (71F) and more
than two weeks at 4C (39F). The data relates to a solid inanimate
surfaces, not meat.
I am a little skeptical that this outbreak in the market was
actually related to a source thousands of miles away carried through
frozen food. It is probably more likely that there was an individual
who may have been heavily infected with the virus who spread it
through the market but we cannot be sure until this individual is
found, which may never happen.
This virus has surprised us many times, unfortunately.
OM SHRIVASTAV, DIRECTOR, INFECTIOUS DISEASES, JASLOK HOSPITAL,
MUMBAI
We've known this virus for less than five months. It is a little
premature to say that this particular coronavirus can or cannot
withstand changes in its environment.
Based on the evidence alone at this time, I'm not aware of a
food-borne transmission.
DALE FISHER, SINGAPORE-BASED DISEASE EXPERT AND CHAIR OF THE GLOBAL
OUTBREAK ALERT AND RESPONSE NETWORK COORDINATED BY THE WORLD HEALTH
ORGANIZATION
If we want to store virus, we freeze it. So if virus is packed with
frozen product then it would survive. We normally talk about less
than a week, but we know that the colder it is, the longer it will
last ... That's part of the theory around why the virus is more
contagious in winter.
So you bring the surface down ... in a refrigeration unit, tied to
the fact that we know there has been outbreaks in meatpacking plants
etc, it is possible.
(Reporting by Roxanne Liu in Beijing, Rocky Swift in Tokyo, John
Geddie in Singapore, Sangmi Cha in Seoul and Sachin Ravikumar in
Bengaluru; Writing by Miyoung Kim; Editing by Robert Birsel)
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