Some vaccines are making progress in protecting vulnerable species

Scientists are testing shots to protect species from bird flu, white nose syndrome and more

The image is a collage of four animals. The leftmost image is an adult king penguin walking toward the camera on a beach with waves in the background. The center left image is a koala holding onto a tree trunk and facing to the right. The center right image is an Asian elephant walking inside an enclosure toward the camera. The right image is a little brown bat hanging upside down inside a cave.

Infectious diseases can cause devastating outbreaks in wildlife. King penguins (left), koalas (center left), Asian elephants (center right) and northern long-eared bats (right) are just some of the species that researchers hope to protect with vaccines.

From left: Martin Priestley/Moment/Getty Images; Guahim/Moment/Getty Images; Agnese Siciliano/Moment/Getty Images; Jomegat/Wikimedia Commons (CC BY-SA 3.0)

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