Researchers are working to find a vaccine against the flu, taking advantage of the immune system of the llama, according to a study published in Science. And the vaccine being worked does not help a year, but every year. When blending antibodies from llamas and humans, a vaccine was created that provided lasting protection against two strains A and B of influenza. The experiment was successfully tested in mice infected with lethal doses of influenza virus.
In theory, the technique could eventually be used to make a nasal spray that would function as a universal vaccine, providing long-term protection against all types of flu.