4 trends tracked about this subject — the full history, oldest to newest below.
Louisville Zoo shuts down multiple habitats after a wild goose tests positive for avian influenza, sparking regional zoo precautions.
Health officials nationwide issue urgent guidance following a documented rise in rabies exposure cases across the United States.
Ancient DNA extracted from medieval parchment has revealed the historical spread of a sheep virus across millennia.
6 news sources are covering this Health story right now — PULSE is tracking how fast it spreads.