1. Novel coronavirus: Officials believe the source was somehow connected to a seafood market in Wuhan, China, where it was initially discovered at the end of December 2019.

2. Influenza pandemics: More people died from the 1918 influenza pandemic than from any other epidemic in recorded history for the little time period involved, killing an estimated 50 million people.

3. Bubonic plague: Nothing compares to the Black Death (also known as the Bubonic Plague), which struck Europe in the 14th century and brought civilization to its knees.

4. Diseases that bite: In 2018, an estimated 228 million people were thought to have contracted malaria, a parasite that infects humans and is spread by mosquito bites.

5. From pets and mice: The fact that rabies kills roughly 55,000 people worldwide each year, predominantly in Asia and Africa, highlights our disease link to animals, especially pets.

6. HIV/AIDS: HIV virus has been linked to a particular species of chimpanzee in Central Africa. When people hunted these animals they most certainly contracted the chimpanzee variety of this disease.

7. Mind control: House cats serve as its main hosts, and the bacterium reproduces sexually inside the guts of these cats. Cats that are let out to roam are more likely to take it up.

8. Cysticercosis: After ingesting water or food carrying the eggs of the parasitic tapeworm known as Taenia solium, people can develop cysticercosis.

9. Ebola: In Central Africa, gorillas and chimpanzees are frequently threatened by the Ebola virus disease, which is brought on by one of the five strains of the Ebola virus.

10. Lyme disease: Black-legged ticks can spread the bacterium that gives humans Lyme disease. Usually, Borrelia burgdorferi causes the illness, but occasionally, another Borrelia species does as well.

11. Humans infect chimps and gorillas: Anthrax outbreaks , which may have originated from cattle that humans herded, have killed gorillas and chimpanzees in West Africa.