When antibiotics are no longer effective, simple medical operations could lead to deadly infections.

The disease attacks the body's immune system and leaves victims exposed to a host of deadly infections.

To give an example, suppose a deadly infection occurs in the population.

This can be a very deadly infection if not caught and properly treated with antifungal medication.

The deadly infection or toxin may have already spread through the body.

Now, their discoveries could lead to new drugs to combat some of the most deadly infections known to man.

The potentially deadly infection can lead to cirrhosis and liver cancer.

A deadly infection would also leave its mark.

The parasite causes a deadly infection which kills many people each year.

So how do you know the difference between a scratchy throat that will disappear on its own and the start of a potentially deadly infection?