June 23, 2010
BOSTON (Reuters) – Giving just one-fifth the usual dose of the polio vaccine may protect babies against the virus nearly as well as a full dose, as long as it is injected just beneath the skin, doctors reported on Wednesday.
The findings could bring down the cost of immunization, an important consideration in developing countries, some of which have had trouble containing the paralytic disease.
A needle-free jet injector made by Bioject Medical Technologies was used to deliver the vaccine beneath the skin at ages 2, 4 and 6 months. Blood tests showed more than 95 percent of the infants mounted an effective immune response against polio.
Babies who got a lower dose had fewer antibodies against polio but the researchers said that should not be a problem.
This article was posted: Thursday, June 24, 2010 at 12:20 am