CDC: 2012-2013 flu vaccine not as effective in elderly

February 25, 2013
CDC: 2012-2013 flu vaccine not as effective in elderly
Vaccination against influenza for the 2012/2013 flu season appears to be moderately effective in reducing the need for outpatient medical attention, but the effect is lower in the elderly, according to research published in the Feb. 22 issue of the U.S. Centers for Disease Control and Prevention's Morbidity & Mortality Weekly Report.

(HealthDay)—Vaccination against influenza for the 2012/2013 flu season appears to be moderately effective in reducing the need for outpatient medical attention, but the effect is lower in the elderly, according to research published in the Feb. 22 issue of the U.S. Centers for Disease Control and Prevention's Morbidity & Mortality Weekly Report.

Lisa Jackson, M.D., of the CDC in Atlanta, and colleagues analyzed data from the U.S. Influenza Vaccine Effectiveness Network to estimate vaccine effectiveness (VE) for the 2012/2013 influenza season.

The researchers estimated the overall VE against influenza A and B to be 47 and 67 percent, respectively, or 56 percent overall, which was close to the interim estimate of 62 percent. When stratified by age group, the estimates for VE against influenza A (H3N2) and B infections were mostly consistent across age groups, with the exception that lower VE against influenza A (H3N2) was seen among adults aged 65 and older. These findings suggest vaccination against influenza reduces the risk of illness requiring outpatient medical visits by one-half to two-thirds for most people, although VE was lower and not statistically significant among people aged 65 and older.

"Antiviral medications should be used as recommended for treatment of suspected influenza in certain patients, including those aged ≥65 years, regardless of their influenza vaccination status," the authors write.

Explore further: CDC: Flu activity still up in U.S. in fourth week of 2013

More information: Full Text

Related Stories

CDC: Flu activity still up in U.S. in fourth week of 2013

February 4, 2013

(HealthDay)—In the fourth week of 2013, influenza activity remained elevated in the United States, with the proportion of pneumonia and influenza-linked deaths above the epidemic threshold, according to FluView, a weekly ...

CDC: Influenza activity increasing across the U.S.

January 5, 2013

(HealthDay)—Flu season descended on the United States early and hard this winter, with significant increases in flu activity observed over the past month, according to an update issued Jan. 4 by the U.S. Centers for Disease ...

Recommended for you

Researchers identify source of opioids' side effects

January 17, 2017

A commercially available drug may help drastically reduce two side effects of opioid painkillers—a growing tolerance and a paradoxical increased sensitivity to pain—without affecting the drugs' ability to reduce pain, ...

CVS generic competitor to EpiPen, sold at a 6th the price

January 12, 2017

CVS is now selling a rival, generic version of Mylan's EpiPen at about a sixth of its price, just months after the maker of the life-saving allergy treatment was eviscerated before Congress because of its soaring cost to ...

Many misuse OTC sleep aids: survey

December 29, 2016

(HealthDay)—People struggling with insomnia often turn to non-prescription sleep remedies that may be habit-forming and are only intended for short-term use, according to a new Consumer Reports survey.

The pill won't kill your sexual desire, researchers say

December 15, 2016

Taking the pill doesn't lower your sexual desire, contrary to popular belief, according to research published in the Journal of Sexual Medicine. The authors of the research, from the University of Kentucky and Indiana University ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.