Why would you think of disease-causing virus and bacteria?

Several experts said the method should in principle be applicable to other disease-causing viruses that work by the same general mechanism as H.I.V.

On the other hand, laboratory animals that are "conditioned" before being exposed to a disease-causing virus are less likely to get sick and die if they are then exercised to exhaustion.

A deficiency of B-lymphocytes can increase susceptibility to bacterial infections like pneumonia and to most disease-causing viruses, such as infectious hepatitis.

But where there are germ strongholds, the conditions are favorable for disease-causing viruses or bacteria to grow.

When a mosquito bites, she also injects saliva and anti-coagulants into the blood which may also contain disease-causing viruses or other parasites.

The blood-sucking species may be vectors of disease-causing viruses, protozoa, or filarial worms.

Mosquitoes are a vector (carrier) which carries disease-causing viruses and parasites from person to person.

Mosquitoes can act as a vector for many disease-causing viruses and parasites.

Unlike disease-causing viruses or bacteria, prions are normal proteins found throughout the body tissues of humans and other animals.