Tests for a swine flu vaccine have shown a ‘strong immune response’ after just one dose, according to scientists.
A total of 100 healthy volunteers took part in the trial of the cell-based drug by researchers at the University of Leicester, who monitored how their immune systems responded.
Results showed 80% had a “strong, potentially protective” response after a single dose, which jumped to more than 90% after a second.
Dr Iain Stephenson, the trial leader said: ‘The results suggest that one vaccine dose may be sufficient to protect against A(H1N1) swine flu, rather than two.
“The aim of the trial was to find out how many doses and what type of vaccine is needed to give protection. These initial results should help to plan vaccination campaigns in the autumn, including doses and timings.”
More than 6,000 adults and children are involved in similar trials around the world.
Plans to vaccinate most of the population against swine flu are expected to begin in October after the drug is licensed, and will be used first on “at risk” groups, such as those with asthma and diabetes.