Three cats infected with the virus that causes COVID-19 spread the virus to three other cats in a lab study published in The New England Journal of Medicine by a research team working in Tokyo, Japan, and Wisconsin, USA.
The research team emphasizes that there is no evidence of the COVID-19 virus transmitting from cats to humans.
Researchers state that it is much more likely that humans are giving the virus to their pets,rather than pets causing humans to become sick.
The research team infected three cats with large doses of the virus that causes COVID-19,SARS-CoV-2, directly into both eyes, both nostrils, the mouth and the trachea (windpipe).The infected cats were housed in pairs with uninfected cats, sharing the same space, food,water and air. Within five days, the uninfected cats tested positive for SARS-CoV-2 in nasal swabs.
After their first positive test, all cats continued to test positive for about five days, meaning
the cats were likely infectious - able to spread the virus to others - for about five days.
Blood tests showed that the cats produced antibodies, molecules that the immune system
uses to eliminate current infections and prevent future re-infection, for 24 days after first
becoming infected, the longest time included in the study.
None of the cats used in the research study showed any symptoms at any time. All six cats
maintained normal body temperature, weight and behavior throughout the experiment.
The United States Department of Agriculture reported in early April that lions and tigers at
the Bronx Zoo in New York cared for by a zookeeper who later tested positive for COVID-19
also showed symptoms of respiratory illness. The one animal that was tested was indeed
positive for SARS-CoV-2.
Researchers state that the evidence that humans can spread the virus to cats and that cats
can spread the virus to other cats demonstrates a strong need to understand more details
about pets’ potential role in the COVID-19 pandemic.
The research team notes that using simple hygiene precautions, like washing your hands
and avoiding obviously ill animals, is necessary to protect the health of both humans and
animals at the same time.
Global experts’ advice for staying healthy with pets
The Japanese Ministry of Health, Labor and Welfare has recommended the following precautions to prevent infection when interacting with animals:
・ Avoid excessive contact with animals to prevent animal-borne infections.
・ Wash hands well after contact with animals and use an alcohol-based sanitizer.
・ Avoid unnecessary contact as much as possible, especially if your pet is not feeling well.
The World Health Organization (WHO) and U.S. Centers for Disease Control and Prevention(CDC) both recommend using standard hygiene practices when caring for pets during the COVID-19 pandemic, including washing your hands before and after touching your pet or your pet’s food and resisting the urge to kiss your pet or let your pet lick you.
According to the World Organization for Animal Health, if people who are infected with
SARS-CoV-2 cannot have another member of their household care for their pets, they should
maintain good hygiene practices and wear a face mask to avoid giving the virus to their pet.
As much as possible, pets belonging to people infected with SARS-CoV-2 should be kept indoors and contact with those pets should be avoided.
Image: Researchers from the University of Tokyo and University of Wisconsin-
Madison studied the virus that causes COVID-19 in cats.
Photo by Vasyl/Adobe
・ Avoid excessive contact with animals to prevent animal-borne infections.
・ Wash hands well after contact with animals and use an alcohol-based sanitizer.
・ Avoid unnecessary contact as much as possible, especially if your pet is not feeling well.
The World Health Organization (WHO) and U.S. Centers for Disease Control and Prevention(CDC) both recommend using standard hygiene practices when caring for pets during the COVID-19 pandemic, including washing your hands before and after touching your pet or your pet’s food and resisting the urge to kiss your pet or let your pet lick you.
According to the World Organization for Animal Health, if people who are infected with
SARS-CoV-2 cannot have another member of their household care for their pets, they should
maintain good hygiene practices and wear a face mask to avoid giving the virus to their pet.
As much as possible, pets belonging to people infected with SARS-CoV-2 should be kept indoors and contact with those pets should be avoided.
Image: Researchers from the University of Tokyo and University of Wisconsin-
Madison studied the virus that causes COVID-19 in cats.
Photo by Vasyl/Adobe
Research Article
Peter J. Halfmann, Masato Hatta, Shiho Chiba, Tadashi Maemura, Shufang Fan, Makoto Takeda, Noriko Kinoshita, Shin-ichiro Hattori, Yuko Sakai-Tagawa, Kiyoko Iwatsuki-Horimoto, Masaki Imai, Yoshihiro Kawaoka, "Transmission of SARS-CoV-2 in Domestic Cats," The New England Journal of Medicine (NEJM): May 13, 2020, doi:10.1056/NEJMc2013400.
Link (Publication)
Link (Publication)
Related Links
Division of Virology (in Japanese)WHO Q&A Can I catch COVID-19 from my pet?
American CDC COVID-19 and animals
World Organization for Animal Health Q&A on COVID-19
USDA Statement on the Confirmation of COVID-19 in a Tiger in New York
Japanese Ministry of Health, Labor and Welfare COVID-19 Q&A
Funding
National Institutes of Allergy and Infectious Diseases funded Center, Japan Agency forMedical Research and Development
