If you share your pet space with a person who has COVID-19, you may wonder, can rats get covid? Rats can sometimes be exposed to SARS-CoV-2, the virus that causes COVID-19, but the risk depends a lot on the rat, the variant, and the type of contact.
For most pet owners, the main concern is not that your rat will become a major source of infection, but that close, repeated exposure during an active human illness could create some risk for your pet rats. The evidence has changed as new variants have emerged, so it helps to know what researchers have found and when to call your vet.
What The Evidence Says About Rats And Infection
The answer has shifted as SARS-CoV-2 changed. Early forms of the virus did not infect rats well, while later variants, especially Omicron, showed more ability to interact with rodent cells.
Human-To-Rat Transmission In Domestic Rats
Reports show that rats may be exposed after living near infected people, especially in close household settings. A 2022 report described an owner transmitting the virus to pet rats, suggesting the rats picked up the virus from the owner.
Direct, close contact, shared airspace, poor hand hygiene, and contaminated surfaces raise the chance of exposure for domestic rats.
Why Omicron And Other VOCs Matter
Variant changes matter because the spike protein affects how well the virus binds to receptors in different species. Research on wild rats published in PLOS One found no evidence that field-caught urban rats in France were infected, and lab inoculation with Omicron BA.5 did not produce infectious virus in the lungs or upper respiratory tract, even though low-level viral RNA and later seroconversion were seen after exposure (PLOS One study).
Not every VOC behaves the same way in rats. Some variants may show more binding potential than the original virus, while others still do not lead to strong, sustained infection.
What IgG Findings Suggest After Exposure
IgG findings indicate an immune response, not proof of ongoing contagious infection. If a rat develops IgG after exposure, that suggests the immune system saw the virus or something similar.
In practice, IgG can mean prior contact, brief exposure, or a response that did not lead to active disease.
How Risk Looks In Everyday Home Settings
Day-to-day risk depends on how closely you interact with your pet rats and whether someone in the home is actively sick with covid-19. Simple habits, like handwashing and limiting face-to-face contact, make a real difference.
How Pet Owners May Expose Rats During Close Contact
The highest-risk moments are when you are coughing, sneezing, handling your rats with unwashed hands, or keeping your face close to theirs. Shared bedding, food prep areas, and laps or shoulders used for cuddling can also create exposure routes.
If you test positive, avoid kissing, breathing directly toward, or sleeping in the same small, poorly ventilated space as your rats. Clean hands before and after feeding, cage cleaning, or medication.
Whether Rats Are Likely To Spread It Back To People
Based on current evidence, pet rats appear unlikely to spread SARS-CoV-2 back to people. Wild-rat surveillance in multiple settings has found limited signs of active infection, and some studies point more to exposure than to sustained transmission.
If a rat becomes ill after exposure, keep the cage clean, avoid unnecessary contact, and ask your vet whether testing or isolation is appropriate.
How This Compares With Guidance For Other Animals
Guidance for rats matches what you see for other pets, including cats and dogs, where infected people are the more common likely direction of spread. The AVMA’s guidance on SARS-CoV-2 in animals emphasizes reducing close contact when you are sick.
Keep care consistent, keep contact cleaner, and avoid panic.
Symptoms, Care, And When To Call A Vet
Rat respiratory illness can look subtle at first, so small changes matter. If your rat has been near someone with COVID-19, watch for breathing changes, appetite shifts, and reduced energy.
Possible Respiratory Signs In Rats
You may notice sneezing, noisy breathing, wheezing, discharge around the nose or eyes, hunched posture, or less interest in food. Some rats also become quieter, hide more, or lose weight.
These signs are not specific to COVID-19. Other respiratory problems are common in pet rats, so your vet may need to sort out whether the issue is viral, bacterial, or something else.
What To Do If You Test Positive
If you are sick, reduce close contact with your pet rats for the time being. Wear a well-fitting mask during necessary care, wash your hands often, and ask another household member to handle cleaning if possible.
Keep feeding, water, and routine care steady.
How To Reduce Contact Without Neglecting Care
Set up a simple care plan before you get sick, if you can. Preportion food, keep cleaning supplies ready, and decide who can step in if you need to rest.
Use brief, efficient care sessions instead of long cuddle time.
What Wider Surveillance Means For Rat Owners
Surveillance helps show whether rats are just exposed, or whether they become real reservoirs for SARS-CoV-2. Future variants may not behave the same way as earlier ones.
Research On Wild And Urban Rat Populations
Studies of urban rats have produced mixed signals. Some work has found antibodies or exposure markers in wild rats, while the French study in PLOS One found no clear infection in captured rats and no infectious virus after Omicron BA.5 inoculation (PLOS One study).
Other reports, including studies from New York City, suggest exposure can occur in some rat populations. Location, variant, and sampling method all matter.
Why Monitoring Matters For Future Spillback
Rodents live close to people, food waste, and wastewater. If a variant adapts better to rats, researchers want to know early, before a new spillback loop develops.
Researchers keep checking urban rodents and compare results across cities, seasons, and virus waves. The goal is to spot changes before they affect public health.
Useful Sources And Databases To Follow
If you keep pet rats, watch updates from the Animal and Plant Health Inspection Service.
Check peer-reviewed papers indexed in PMC.
These sources often summarize new animal-health findings and link to the underlying research.
When you see a claim about rats and COVID, check whether it refers to antibodies, viral RNA, or live virus.
These details make a big difference in what the finding really means.
