Benefits of flu vaccine substantially overestimated says study

efore flu season when there should be no true vaccine effect.

The reductions in risk before flu season suggest the presence of bias due to preferential receipt of vaccine by relatively healthy seniors on the estimates of flu vaccine effectiveness observed during flu season.

The researchers then looked at 252 people aged over 65 who had died during a flu season and 572 age-matched controls. Using the subjects' medical records, they identified people with 'functional limitations', such as requiring assistance to walk or bathe.

They found that functional limitations were associated with both an increased risk of death and a decreased likelihood of influenza vaccination, and so may confound the association of influenza vaccination and risk of death.

In a commentary on the studies, Professor Paul Glezen of Baylor College of Medicine, Houston said: "During the period from 1989 to 1997 the vaccination rate for people aged over 65 in the US increased from 30 to 67 per cent. Despite this increase, mortality and hospitalisation rates continued to increase rather than decline as would be expected if the vaccine was optimally effective.

"The study by Dr Jackson and her colleagues concludes that elderly people who choose to take the vaccine are, contrary to the findings of earlier cohort studies, in better health than those who fail to get the vaccine. This suggests that better studies of the benefits of flu vaccine in elderly and other high-risk groups are necessary to guide strategies for flu control.

"In the meantime, other strategies should be considered in addition to vaccinating the elderly. Many studies have shown that school children have the highest rates of flu infection each year and that they are the major spreaders of flu in the community and introducers into the household. Immunization of school children, therefore, would reduce exposure of vulnerable patients to flu.

"One of the problems with current vaccination strateg

Contact: Hannah Johnson
University of Bristol

Page: 1 2 3

Related medicine news :

1. Benefits of trastuzumab are lasting, reducing both HER2 + breast cancer deaths and recurrence
2. Benefits of school-based fitness programs fade after summer
3. Benefits of testosterone treatment unknown, research shows
4. Benefits to employers outweigh enhanced depression-care costs
5. Conference Costs/Benefits of HIV/AIDS Interventions Developing Countries
6. Benefits of screening colonoscopy in very elderly may be limited
7. Benefits of longer-term tamoxifen use may take years to appear
8. Benefits of nitric oxide vary in preemies, Stanford/Packard researchers say
9. Benefits of continuous NSAID use in ankylosing spondylitis
10. Traditional Chinese exercises may increase efficacy of flu vaccine
11. DNA vaccine against multiple sclerosis appears safe, potentially beneficial

Post Your Comments:

(Date:10/13/2017)... (PRWEB) , ... October 13, 2017 , ... “The Journey: ... faced every danger possible to save lost souls in the Philippines. “The Journey: From ... Carole is a dedicated teacher of the Bible. She has taught all ages and ...
(Date:10/12/2017)... ... October 12, 2017 , ... ... healthcare compliance program management, will showcase a range of technology and learning solutions ... Living (NCAL) Convention and Expo to be held October 14–18, 2017 at the ...
(Date:10/12/2017)... ... 12, 2017 , ... Planet Fitness, one of the largest and fastest growing ... open a flagship location in Covington, LA at 401 N. U.S. Highway 190, in ... to Office Depot in the Holiday Square shopping center. Its location allows it to ...
(Date:10/12/2017)... ... October 12, 2017 , ... IsoComforter, Inc. ( https://isocomforter.com ... introduction of an innovative new design of the shoulder pad. The shoulder pad ... comfort while controlling your pain while using cold therapy. By utilizing ice and water ...
(Date:10/12/2017)... ... October 12, 2017 , ... Asante, ... post-acute health care, have expanded their existing home health joint venture through an ... has been operating a joint venture home health company with Asante, delivering clinically ...
Breaking Medicine News(10 mins):
(Date:10/12/2017)... -- AVACEN Medical , Inc. (AVACEN) announced that Frost ... Product Innovation Award for Its fibromyalgia pain management device. ... device market research by Frost & Sullivan,s industry experts. ... relief product, the AVACEN 100, offers a safe and effective ... ...
(Date:10/11/2017)... Texas , Oct. 11, 2017  True ... services, has amplified its effort during National Breast ... about hereditary cancer risks. ... of Clinical Oncology calculated that more than 10 ... have inherited mutations in BRCA1 or BRCA2 and have ...
(Date:10/5/2017)... , Oct. 5, 2017  In response to ... Oral and Maxillofacial Surgeons (AAOMS) released prescribing recommendations ... to be used as a first-line therapy to ... Recognizing the value ... White Paper "Opioid Prescribing: Acute and Postoperative Pain ...
Breaking Medicine Technology:
Cached News: