Nov. 25 (Bloomberg) -- Acute allergic reactions to GlaxoSmithKline Plc’s swine flu vaccine aren’t related to the adjuvant that is added to the shot to boost its potency, David Butler-Jones, the country’s chief public health officer, said at a news conference. There have been 0.32 cases of allergic reaction per 100,000 vaccinations, below the standard of 1 per 100,000, health officials said.

Last Updated: November 25, 2009 12:03 EST