mice

A 2022 study in mice and ferrets showed that a universal flu vaccine NIH plans to support has promise.

When transplanted into mice as a test, it appeared to work.

Woodland creatures that could carry the disease and should be avoided include chipmunks, wood rats, mice and marmots.

Once manufactured, the leading designs were tested on bacteria in the lab and on infected mice, resulting in two new potential drugs.

Furthermore, the author contends that many studies that do reference vaccines involved laboratory mice that received injections directly into the brain or intravenously, which differs significantly from how humans receive the vaccines.