https://phys.org/news/2019-01-bacterial-immunity-infectious-disease.html

"Just like humans get infected by bacteria, the bacteria get infected by viruses," said Rachel Whitaker, a professor of microbiology and leader of the Infection Genomics for One Health research theme at the Carl R. Woese Institute for Genomic Biology at the University of Illinois at Urbana-Champaign. "There's this nested, layered set of ecosystems and interactions of infection."

Whitaker and her graduate students, Whitney England and Ted Kim, had the idea to use P. aeruginosa as a kind of "model system" for understanding how bacteria's interactions with viruses may affect human health.