because people poop in other places where the waste is not properly disposed of, it can then support bacteria and fungi, which can get back into the food chain.
Scurvy.....Scurvy cannot be spread, it is a deficiency disease. Scurvy is caused by a severe lack of vitamin C.
The lack of hygiene, poor health, not a lot of doctors and infections not taken care of can spread a lot of diseases.
A contagion is either a disease spread by contact, the spread of such a disease, or the spread of anything harmful, as if it were a disease.
More properly, a LACK of science played a role. The means by which the Bubonic Plague was spread was unknown (disease spread by fleas from rats). It was blamed on night fogs, cats, and bad air. When the cats were killed, there were more rats to spread the disease.
yes
Disease, bad crops, lack of livestock.
Lack of food and clean water, disease spread due to decaying dead plants and animals.
An Epidemiologist studies the spread of disease.
A disease which is carried and spread by an agent (animal or microorganism) is a vector spread disease. Eg. Mosquitoes are the vectors for malaria.
Lyme disease is spread by ticks. Lyme disease can be pretty much everywhere.
Rats that were infected by the disease and have died on the side of the street to easily spread the disease
No. It does not spread by ameba. Ameba is a protozoa. Lyme disease is a tick born disease.