A bacterium, virus, or other microorganism that can cause disease; The worldwide spread of a new disease. An influenza pandemic occurs when a new influenza virus emerges and spreads around the world and most people do not have immunity.
References
- UN Environment (2019). Global Environment Outlook – GEO-6 : Healthy Planet, Healthy People. Nairobi. DOI 10.1017/9781108627146.
GEO-1-6
A bacterium, virus, or other microorganism that can cause disease; The worldwide spread of a new disease. An influenza pandemic occurs when a new influenza virus emerges and spreads around the world and most people do not have immunity.