Nature/Lab Animal: Keeping an eye on the human-animal interface
Sometimes, symptoms of a disease are obvious – think of the mass mortality events observed in crows infected with West Nile Virus (a mosquito-borne virus that can also cause febrile illness in humans), says Angela Bosco-Lauth, a virologist and veterinarian and at Colorado State University. Often, signs are much subtler – if they are there at all.