Why fix something that isn't broken? It works, and many of their medical treatments are either inspired by, or still exactly the same, as they were hundreds of years ago.

"It's not something you'd often have cause to think about, I'm sure. But yes, epidemics are something we'd like to avoid."

Satisfied with the results of the vaccines, Julian closes his tricorder and smiles. "Alright, you're free to go. If you need anything else, please do ask."