In this case, Novartis demonstrated that the vaccine induced levels of antibodies in the blood likely to be effective in preventing seasonal influenza.

The vaccine - which consists of whole, dead leprosy bacilli - should induce immunity in the subjects.

But scientists hope that if a vaccine can induce production of certain antibodies in advance, invasion by the AIDS virus could be warded off.

Furthermore, current vaccines induce immunity for only six months or so, and vaccinated animals can become carriers of the virus even if they do not become sick.

The vaccine induced significant anti-Na-ASP-2 IgG and cellular immune responses.

A vaccine induces active immunity when antigens are injected into an animal that cause it to produce desired antibodies itself.

It is a component that can be added to a vaccine to increase the level of immunity that the vaccine can induce.

The first is to learn whether the experimental vaccine can induce the production of protective antibodies in the volunteers.

The second step is to determine the amount of antibodies that the vaccine can induce.

However, recent opposition to vaccination campaigns has evolved, often relating to fears that the vaccine might induce sterility.