Any parasite can spread disease. Mosquitoes, ticks, flees and lice are the most common.
malaria
Malaria normally spreads by bite of infected mosquitoes. Rarely the disease is transmitted by transfusion of infected blood.
They suck blood but other peoples blood gets into your blood stream
mosquitos that are infected with the disease. they inject the disease into your body when they bite you.
Mosquitoes and flies do not deliberately spread the diseases. That is the destiny of the mosquitoes to suck your blood and habit of the flies to transmit the germs. But nothing stops you from defending yourself from their menace. Self defence is your right and duty also. But then you do it without any prejudice.
not all mosquitoes carry diseases. But if they drink a diseased persons blood they can easily pass on the disease by passing on the blood to another.
It will spread via Blood stream ...
no they dont bite they actually sting you and suck your blood but it feels as if they are biting you. no they don't, they stick their proboscis into your veins, arteries, or cappilaries and suck the blood. Only female mosquitos do this. It is a small insect, the female of which bites and sucks blood from animals and humans. Mosquitoes can spread diseases such as malaria and yellow fever by biting.
by mosquitoes or careless blood transmission
Blood transfusion graft-vs.-host disease affects mostly the blood.
Africa has a big malaria crisis right now. It also occurs in South America and Southern Asia. Malaria is a deadly disease spread by mosquitoes that infects red blood cells.