By Daniel R. Lucey MD, MPH, FIDSA
Today this statement (also provided below) from the United States Food and Drug Administration, acting Commissioner Janet Woodcock M.D., and US Department of Agriculture acting Secretary Kevin Shea concluded that there is currently no scientific or epidemiologic basis for the claim that SARS-CoV-2/COVID-19 is transmitted via food or food packaging.
This statement is timely in that on Feb.19 or 20 the World Health Organization-China team investigating the origins of SARS-CoV-2 is expected to make public a summary of their report that they discussed last week at a joint press conference in Wuhan at the end of their one-month stay there. (The complete report is not expected for several more weeks).
One of the hypotheses put forth last week at this joint WHO-China press conference was that the virus had been imported from outside China via frozen food or food packaging.
Two questions I would ask regarding this hypothesis:
- Why Wuhan first? Of all the cities and numerous markets in China, why was the epidemic first seen in Wuhan?
- Why has no country in the world, except for China, reported COVID-19 outbreaks due to imported frozen food or food packaging?
Daniel Lucey, M.D. MPH, FIDSA, FACP, is a Clinical Professor of Medicine at Dartmouth Geisel School of Medicine, Infectious Disease adjunct Professor at Georgetown Medical Center, senior scholar at Georgetown Law, Anthropology Research Associate at the Smithsonian Museum of Natural History and a member of the Infectious Diseases Society of America Global Health Committee. He served as a volunteer to outbreaks overseas including hands-on Ebola patient care in Sierra Leone and Liberia (Doctors without Borders) 2014, MERS 2013, SARS 2003, as well as HIV, H5N1, Zika, yellow Fever, and pneumonic plague 2017 (with WHO/USAID/CDC). Since Jan. 6, 2020 he has contributed over 75 posts to Science Speaks on COVID-19 and traveled to China in February 2020. He initially proposed, then fundraised and helped design the content for 2018-2022 Smithsonian Exhibition on Epidemics due to zoonotic viruses. From 1982-1988 he trained at University of California San Francisco and Harvard and was an attending physician at the NIH (NIAID) in the 1990s while in the US Public Health Service.
Today’s statement from USDA and FDA appears below:
“After more than a year since the coronavirus disease 2019 (COVID-19) outbreak was declared a global health emergency, the U.S. Department of Agriculture, the U.S. Food and Drug Administration and the U.S. Centers for Disease Control and Prevention continue to underscore that there is no credible evidence of food or food packaging associated with or as a likely source of viral transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus causing COVID-19.
Our confidence in the safety of the U.S. food supply remains steadfast. Consumers should be reassured that we continue to believe, based on our understanding of currently available reliable scientific information, and supported by overwhelming international scientific consensus, that the foods they eat and food packaging they touch are highly unlikely to spread SARS-CoV-2.
It’s particularly important to note that COVID-19 is a respiratory illness that is spread from person to person, unlike foodborne or gastrointestinal viruses, such as norovirus and hepatitis A that often make people ill through contaminated food. While there are relatively few reports of the virus being detected on food and packaging, most studies focus primarily on the detection of the virus’ genetic fingerprint rather than evidence of transmission of virus resulting in human infection. Given that the number of virus particles that could be theoretically picked up by touching a surface would be very small and the amount needed for infection via oral inhalation would be very high, the chances of infection by touching the surface of food packaging or eating food is considered to be extremely low.
The USDA and the FDA are sharing this update based upon the best available information from scientific bodies across the globe, including a continued international consensus that the risk is exceedingly low for transmission of SARS-CoV-2 to humans via food and food packaging. For example, a recent opinion from the International Commission on Microbiological Specifications for Foods (ICMSF)External Link Disclaimer, stated: “Despite the billions of meals and food packages handled since the beginning of the COVID-19 pandemic, to date there has not been any evidence that food, food packaging or food handling is a source or important transmission route for SARS-CoV-2 resulting in COVID-19.” Additional literature reviewsExternal Link Disclaimer and analysesExternal Link Disclaimer from other countries agree.
In addition, considering the more than 100 million cases of COVID-19, we have not seen epidemiological evidence of food or food packaging as the source of SARS-CoV-2 transmission to humans. Furthermore, transmission has not been attributed to food products or packaging through national and international surveillance systems. Food business operations continue to produce a steady supply of safe food following current Good Manufacturing Practices and preventive controls, focusing on good hygiene practices and keeping workers safe.
Based on the scientific information that continues to be made available over the course of the pandemic, the USDA and FDA continue to be confident in the safety of the food available to American consumers and exported to international customers.
The FDA, an agency within the U.S. Department of Health and Human Services, protects the public health by assuring the safety, effectiveness, and security of human and veterinary drugs, vaccines and other biological products for human use, and medical devices. The agency also is responsible for the safety and security of our nation’s food supply, cosmetics, dietary supplements, products that give off electronic radiation, and for regulating tobacco products.”