Stories tagged National Institutes of Health

Sep
13
2009

H1N1 vaccination
H1N1 vaccinationCourtesy AJC1

Making sure vacinations are safe

Before giving H1N1 flu vaccinations to millions of people, clinical trials are needed. What is an effective dose for people of various ages and body types. What are the side effects.

No second shot required for H1N1 flu

Clinical trials are showing that the new H1N1 swine flu vaccine protects with only one dose instead of two. This is very good news. The vaccinations can be given to twice as many people at half the cost.

"Healthy adults got one 15-microgram shot, and their blood was tested 21 days later. By that time, 97 percent of the 120 adults had enough antibodies to be considered protected."
“This is definitely a big deal,” said Dr. John J. Treanor, a vaccine expert at the University oRochester. “People had been planning for a scenario that would require two doses.” New York Times

Pregnant women first

The vaccinations are proving to be effective only 8-10 days after being administered. This may allow all 159 million people in the high risk group (pregnant women, people under 24 years old or caring for infants, people with high-risk medical conditions and health-care workers) to be protected before the swine flu reaches its expected mid-winter peak.

Learn more about H1N1 influenza vaccine clinical trials

The National Institute of Allergy and Infectious Diseases (NIAID) News statement: "Early Results from Clinical Trials of 2009 H1N1Influenza Vaccines in Healthy Adults".