In the last hundred years, the world has seen massive increases in human populations, resulting in massive decreases in natural environments. These two parallel trends are critical parts of the complex chain of events that has triggered a rise in the emergence and spread of new zoonoses.
Zoonotic diseases(also known as zoonoses) are illnesses that are caused by germs that spread between animals and people. Examples of zoonoses include HIV/AIDS, Ebola, Lyme disease, malaria, rabies, West Nile virus, Severe Acute Respiratory Syndrome (SARS) and Middle East respiratory syndrome(MERS), in addition to the novel coronavirus (COVID-19)