Navigation Links
Flu Shots Lower Risk of Blood Clots

Study found getting one reduced chances by 26%

SUNDAY, Nov. 9 (HealthDay News) -- People who get their annual flu shot may reap an extra benefit: a reduction in their risk of developing a blood clot.

The benefit appeared stronger in those under the age of 52, according to research that was presented Sunday at the American Heart Association's annual scientific sessions, in New Orleans.

The findings, the first to demonstrate such an effect, may help explain why the flu shot lessens the risk of cardiovascular events in people with coronary artery disease, but the real current value of the data may lie in it convincing more people to get their annual shot.

"This kind of data is super helpful to me with patients in the clinic, particularly if they've had a blood clot," said Dr. Ann Bolger, the William Watt Kerr professor of clinical medicine at the University of California, San Francisco, said during a news conference on Sunday. "It's another nail to hammer on."

Venous thromboembolism (VTE) refers to the development of a blood clot in a vein. Such a clot can be life-threatening if breaks off and travels to the lung (pulmonary embolism).

Experts had previously known that the flu vaccine can reduce the risk of cardiovascular events in people with coronary artery disease, but it wasn't clear why.

"We had interesting epidemiological data before that flu increased cardiovascular deaths, but we didn't know where from," Bolger said. "This interesting observation implies that if you get the flu shot and avoid infection, you're less likely to get clots in the veins and arteries."

The authors compared 727 patients with one documented episode of VTE (deep vein thrombosis or pulmonary embolism) and no history of cancer within the past five years (cancer is a risk factor for clots) with an equal number of controls with no history of clots.

Participants filled out questionnaires regarding past medical history, especially risk factors for VTE, and whether or not they had had a flu shot in the past year. They were followed for five years.

In all, 28 percent of people who had had a clot and 32 percent of controls had been vaccinated.

Individuals who had had a flu shot were 26 percent less likely to develop a blood clot.

People younger than 52 were 48 percent less likely to form a blood clot. In women under the age of 51, the risk reduction was 50 percent, and in women under 51 taking birth control pills or estrogen replacement therapy, the risk reduction was 59 percent.

Researchers can only speculate as to why the flu shot might have this protective effect.

"There is an indication that influenza can induce systemic inflammation by increasing interleukin 6," said study author Dr. Joseph Emmerich, a professor of vascular medicine at the University Paris Descartes and head of INSERM Lab 765, which investigates thrombosis. "If it was only due to the prevention of influenza in vaccinated people, we would have a much more important decrease in the incidence [of clots] during the winter season compared to other parts of the year."

In fact, there was no such seasonal swing.

The heart association recommends that individuals with heart disease get an annual flu shot. Patients with cardiovascular disease should get the nasal spray vaccine.

More information

See the American Heart Association guidelines on flu shots.

SOURCES: Joseph Emmerich, M.D., Ph.D., professor, vascular medicine, University Paris Descartes, and head, INSERM Lab 765; Ann F. Bolger, M.D., American Heart Association spokeswoman and William Watt Kerr professor of clinical medicine, University of California, San Francisco; Nov. 9, 2008, presentation, American Heart Association annual scientific sessions, New Orleans

Copyright©2008 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. New Compound Might Be Improvement Over Allergy Shots
2. Too Many High-Risk Teens Not Getting Flu Shots
3. Free Flu Shots, Health, Dental Screenings and Services Available to New Kensington Area Adults
4. University Of Minnesota Gives 11,538 Flu Shots Tuesday, Shattering Guinness World Record for Most Flu Shots in a Single Day
5. Snapshots of eyes could serve as early warning of diabetes
6. Unilever Unveils Promise(R) SuperShots(R) for Blood Pressure, the First Functional Shot to Increase Daily Potassium Intake to Help Reduce the Risk of High Blood Pressure
7. Online Scheduler Helps Track Kids Shots
8. AHRQs 2007 State Snapshots Provide Broader Portraits of State-By-State Health Care Performance
9. CDC Vaccine Committee Recommends More Shots for Children
10. Allergy Shots Are Effective Treatment for Symptoms
11. A Few Shots Away: Immunotherapy May Relieve Allergy Symptoms
Post Your Comments:
Related Image:
Flu Shots Lower Risk of Blood Clots
(Date:6/26/2016)... ... June 26, 2016 , ... PawPaws brand pet ... product that was developed to enhance the health of felines. The formula is all-natural ... two main herbs in the PawPaws Cat Kidney Support Supplement Soft Chews ...
(Date:6/25/2016)... ... June 25, 2016 , ... ... and applications at AcademyHealth’s Annual Research Meeting June 26-28, 2016, at the Hynes ... important health care topics including advance care planning, healthcare costs and patient and ...
(Date:6/25/2016)... ... June 25, 2016 , ... "With 30 hand-drawn hand gesture animations, ... Christina Austin - CEO of Pixel Film Studios. , ProHand Cartoon’s package transforms ... Final Cut Pro X . Simply select a ProHand generator and drag it above ...
(Date:6/25/2016)... ... June 25, 2016 , ... Dr. Calvin Johnson ... Recently, he has implemented orthobiologic procedures as a method for treating his patients. ... the first doctors to perform the treatment. Orthobiologics are substances that orthopaedic surgeons ...
(Date:6/24/2016)... ... June 24, 2016 , ... A recent article published ... unfamiliar with. The article goes on to state that individuals are now more comfortable ... less common operations such as calf and cheek reduction. The Los Angeles area medical ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... According to a new market ... Needles, Safety Pen Needles), Needle Length (4mm, 5mm, 6mm, ... of Purchase (Retail, Non-Retail) - Trends & Global Forecasts ... market for the forecast period of 2016 to 2021. ... by 2021 from USD 1.65 Billion in 2016, growing ...
(Date:6/23/2016)... HOUSTON , June 23, 2016  MedSource ... platform as its e-clinical software solution of choice.  ... the best possible value to their clients by ... nowEDC.  The preferred relationship establishes nowEDC as the ... pricing for MedSource,s full-service clients.  "nowEDC has long ...
(Date:6/23/2016)... , June 23, 2016  In a startling report released today, ... their residents by lacking a comprehensive, proven plan to eliminate prescription ... definitive ranking of how states are tackling the worst drug crisis ... four states – Kentucky , New ... Vermont . Of the 28 failing states, three – ...
Breaking Medicine Technology: