attenuated vaccine

The potential for contact immunity exists primarily in "live" or attenuated vaccines.

In addition to their efficacy, live attenuated vaccines are relatively inexpensive to produce.

The method may hold the key to a new class of antiviral, so-called live, or attenuated vaccines.

Attenuated vaccines also cannot be used by immunocompromised individuals.

In an attenuated vaccine, live virus particles with very low virulence are administered.

Although most attenuated vaccines are viral, some are bacterial in nature.

It was the first and (as of 2007) the only live attenuated vaccine for influenza available outside of Europe.

This means that live attenuated vaccines are unlikely to be used for certain high profile lethal diseases.

Attenuated vaccines contain live viruses, that have been weakened.

Both inactivated and live attenuated vaccines are available.

Since then, attenuated vaccines have been developed.

Live attenuated vaccines historically have been the most effective intervention in the fight to prevent infectious diseases.

"It is the best chance for a live attenuated vaccine," Dr. Mills said in an interview.

Persons with severe cell-mediated immune deficiency should not receive live attenuated vaccines.

Unlike 'live attenuated vaccines', these can be used safely and without any restrictions, as they pose no risk of circulating an active virus.

The attenuated vaccine is itself contagious.

Attenuated vaccines have some advantages and disadvantages.

The risks of the so-called 'live attenuated vaccines' are no longer a threat, as new inactivated vaccines are now available.

These rules were designed for the use of 'live attenuated vaccines' that were the only vaccines available when the directive was adopted a decade ago.

It is an attenuated vaccine, unlike most influenza vaccines, which are inactivated vaccines.

If live, attenuated vaccine is used, antiviral drugs should not be administered since they will decrease the effectiveness of the vaccine.

Live, attenuated vaccines are composed of micro-organisms that have been cultivated under conditions which disable their ability to induce disease.

Only attenuated vaccines are efficacious.

Live attenuated vaccines have decreased pathogenicity.

Although this suggested that a live attenuated vaccine might protect against HIV, the approach was considered far too risky to try in humans.