Don't breathe a sigh of relief just yet. Even though the World Health Organization recently declared that the Zika virus is no longer a global health emergency, other diseases are growing more threatening each day. Who's manning the front lines against these diseases? Increasingly, veterinarians. Today's veterinarians aren't merely tasked with giving Fido his shots -- they're asked to serve as public-health warriors, leading the attack against such diseases. The lives and livelihoods of millions of people depend on them receiving the proper training.