"I have a natural immunity," she said and looked at her hands.

Healthy people over 65 years of age seem to have some natural immunity.

The problem with natural immunity is the risk of complications.

Because it's a new virus, most of us don't have any natural immunity to it.

It is very hard to catch - 95 percent of humans have a natural immunity.

A cleaner environment left increasing numbers of children with no natural immunity.

In fact being a carrier helps to boost natural immunity.

Virginia called for volunteers from the lower South where the disease was more common and residents had developed some natural immunity.

An epidemic broke out among the Cherokee, who had no natural immunity.

As nearly as we can determine, there is no natural immunity.

Vaccines stimulate the body to produce a natural immunity to disease.

They did not have any natural immunity to diseases.

It's like a natural immunity, because they're so little.

All I can say for certain now is that your daughter seems to possess a great deal of natural immunity to it."

Natural immunity to the parasite develops slowly and is not very effective.

Only its limited use and natural immunities had prevented the disappearance of one human race.

Because of genetic mutations, they are bald and have little natural immunity to disease.

I'd had some natural immunity, but even the lesser vamps were dangerous.

"Someone might escape the first round, or have a natural immunity to one form, but eventually they would catch it.

This is when a baby's natural immunity to illness, obtained from the mother, begins to diminish.

And on the natural immunity of the subject.

These are many and varied, and you have no natural immunity."

Badgers make popular messenger animals because of their natural immunity to these factors.

There appears to be a relationship between this polyster allergy and their natural immunity.

Soon began death from diseases, such as malaria, that the Maidu have no natural immunity.