"Pandemic threat" refers to the possibility of a widespread and highly contagious disease, known as a pandemic, occurring and potentially causing harm to a large number of people globally. Full definition
«We are facing the largest pandemic threat in the last 100 years,» he says. (sciencemag.org)
Due to the high lethality and virulence of HPAI A (H5N1), its endemic presence, its increasingly large host reservoir, and its significant ongoing mutations, the H5N1 virus is the world's largest current pandemic threat, and billions of dollars are being spent researching H5N1 and preparing for a potential influenza pandemic. (sciencedaily.com)
Discover: Influenza is the biggest pandemic threat we face. (discovermagazine.com)