zoonotic disease

Where H5N1 stands in October 2026: 72 U.S. human cases, dairy cattle spread, what would signal pandemic risk, and what CDC says about milk and vaccines.

Rift Valley fever spreads by mosquitoes and contact with infected livestock, causing abortion storms in animals and rare severe disease in humans.

SARS-CoV-1 and MERS-CoV came from animals, spread in hospitals, and differ sharply in lethality. How each emerged, why SARS ended, and why MERS persists.

Lassa fever virus explained: how rodents spread it, why most cases are mild, what causes deafness, and why ribavirin's benefit is still unproven.

Hantavirus explained: how rodent-borne viruses cause lung and kidney failure, what the 1993 Four Corners outbreak revealed, and how to cut your risk.

Nipah virus kills an estimated 40 to 75 percent of those infected and has no licensed vaccine. How it spreads from bats to people, and why experts watch it.