Drugmakers around the world are rushing to produce the swine flu vaccine by this fall.
Authorities earlier had said the flu vaccine was 62% effective for adults and children.
Generally a flu vaccine is considered pretty good if it's more than 60 percent effective.
There was no swine-flu vaccine, so government turned to the drug industry for help.
Those people who are currently ill with a fever should not receive the flu vaccine.
Learn more about the flu vaccine's effectiveness Will the flu vaccine make me sick?
Dr Joseph acknowledged that greater uptake of the flu vaccine in the UK could be one factor.
Dr. Sanjay Gupta, CNN chief medical correspondent, endorsed getting a flu vaccine and frequently washing your hands.
They then tested the patients for flu, and asked them if they had received a flu vaccine.
GlaxoSmithKline (nyse: GSK - news - people ) is working on its own bird-flu vaccine.
Most big drugmakers abandoned the flu vaccine market, which is far less profitable than that of branded drugs.
Supplies of flu vaccine have also been ordered and the first doses could be administered in the autumn.
Peterson isn't against all vaccines -- she and her daughters have already gotten the seasonal flu vaccine, for example.
The city of Somerville, for example, ran out of flu vaccine on Thursday.
FORBES: Boston Declares Public Health Emergency; Flu Vaccines Run Dry
It would then be offered to high risk groups across the island who already receive the seasonal flu vaccine.
There was a bit of a brouhaha recently when The Lancet published a study of flu vaccine efficacy.
The flu vaccine is only about 60% effective, according to the CDC.
Mothers who have just given birth should receive the swine flu vaccine, the Royal College of Midwives (RCM) has warned.
It was made the same way as the yearly flu vaccine, a painstaking process involving the inoculation of hen eggs.
Last year, the U.S. faced a shortage of flu vaccine due to manufacturing problems at a Chiron plant in Britain.
The flu vaccine crisis and Merck's recall of its aniti-inflammatory drug Vioxx underscore the need for major health care reforms.
The flu vaccine will be available from some pharmacies in Wales for the first time, the Welsh government has announced.
BBC: Flu jab given at some pharmacies in Wales for first time
Osterholm's study suggests this has been a general pattern in American public health history with relation to the flu vaccine.
Nearly 10 million doses of H1N1 flu vaccine are available to be ordered by health providers this week, Schuchat said.
CNN: Study: Underlying conditions playing less of role in H1N1
Get a flu vaccine, wash your hands frequently and well, and sneeze and cough into the crook of your elbow.
However, he thinks any sales boost from the planned swine flu vaccine will last only as long as the threat.
Fiore said that, typically, only 20 percent to 50 percent of people in targeted groups seek out seasonal flu vaccine.
The U.S. flu vaccine crisis and Merck's recall of its anti-inflammatory drug Vioxx underscore the need for major health care reforms.
When I wanted to dramatize the potential of next-generation flu vaccine production technologies in 2009, I chose VaxInnate as my example.
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