Washington: US trials of Sanofi- Pasteur SA’s and CSL Ltd’s H1N1 swine flu vaccines confirm only one dose is needed to protect people, US health officials said on Friday.
“I am very pleased today to be able to tell you that the initial results from the NIH (National Institutes of Health) sponsored trial corroborate and reinforce the findings from the companies,” Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, told a news conference.
Fauci said the immune response was quick, too—people appear to be protected eight to 10 days after being vaccinated.
“Americans who get their H1N1 vaccine will most likely be immunized and protected against the virus sooner than we thought,” Health and Human Services secretary Kathleen Sebelius told the news conference.
Fauci said the trials also showed very few side-effects and all so far were minor. CSL reported on Thursday that other trials showed just a single dose of vaccine was needed and, last week, Novartis AG and China’s Sinovac Biotech Ltd also said they could protect people with one dose of their vaccines.
Anne Schuchat of the US Centers for Disease Control and Prevention said H1N1 flu was now active in all 50 US states.