westward expansion
Rats that were infected by the disease and have died on the side of the street to easily spread the disease
communicable infection is a disease caused by microbes that spread easily
Scurvy.....Scurvy cannot be spread, it is a deficiency disease. Scurvy is caused by a severe lack of vitamin C.
the disease caused by fly are mainly dihhorea,cholera,tubercolosis ,loose motions,.generally the communicable disease are spread by flies
Bubonic Plague
we can prevent this with keeping our body healthy.
Disease, bad crops, lack of livestock.
No. Cancer is a disease. Dengue is caused by a virus and spread by mosquitoes.
A disease called SMALL POX.
It was a bacterium that caused it, but rats and fleas between them were the vector which spread the disease.
Sepsis, septicemia.
its a bacterial infectious disease which is caused by Pasteurella multocida and spread through animal bite