Rats that were infected by the disease and have died on the side of the street to easily spread the disease
westward expansion
Dutch Elm disease is a tree disease that is spread by beetles. It is caused by a fungus carried by elm bark beetles, which feed on the bark of elm trees, introducing the disease into the tree's vascular system.
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.
It was a bacterium that caused it, but rats and fleas between them were the vector which spread the disease.
No. Cancer is a disease. Dengue is caused by a virus and spread by mosquitoes.
A disease called SMALL POX.
Sepsis, septicemia.
Yes, Legionaries disease is an "airborne" virus, spread by close contact or by breeding in air ducting and spread throughout a bldg. Which is how it was 1st identified and given it's name.
This disease is caused when a parasitic worm infects the lymphatic system. The prognosis is not good as there is no cure and you are only able to stop the spread of the disease.