Navigation Links
New research finds flu shot effective regardless of circulating flu strain
Date:6/25/2013

New research out of St. Michael's Hospital has found that despite popular belief, the flu shot is effective in preventing the flu, even if the virus going around does not match the vaccine.

"It's quite common for people to say they are not going to get the flu shot this year because they've heard it does not match the strain of flu going around," said Dr. Andrea Tricco, the lead author of the paper and a scientist at the Li Ka Shing Knowledge Institute of St. Michael's Hospital. "However, we've found that individuals will be protected regardless of whether the flu strain is a match or not."

The review of the literature analyzed more than 40 years of data, from 1971 to 2011, and included 47 influenza seasons and almost 95,000 healthy people.

Dr. Tricco and colleagues were particularly interested in flu seasons when the flu vaccines were not matched well to circulating strains. They wanted to understand whether the flu vaccines would still be effective when the strains were not a match.

Vaccines work by giving the body an inactive, or non-infective, form of the flu virus so that the body can produce antibodies. When an individual comes into contact with the virus in the future, the body can use the natural antibodies it has created to fight it off.

The study looked at the two most popular vaccine formulations in Canada Trivalent inactive vaccine for adults and live-attenuated influenza vaccine for children. They found that both vaccines provided significant protection against matched (ranging from 65 per cent to 83 per cent effectiveness) and mismatched (ranging from 52 per cent to 54 per cent effectiveness) flu strains.

"Looking at matches and mismatches can be a difficult process because it's not a yes or no variable," Dr. Tricco said. "Often we're looking at the degree of match between a flu strain and what's included in a vaccine because strains drift from year to year."

Dr. Tricco said that the study's results are mainly applicable to the seasonal flu in otherwise healthy children and adults.


'/>"/>

Contact: Kate Taylor
TaylorKa@smh.ca
647-393-7527
St. Michael's Hospital
Source:Eurekalert

Related medicine news :

1. UCLA Brain Injury Research Center gets NCAA funding for research on sports concussions
2. NIH awards $20 million over 5 years to train next generation of global health researchers
3. Researchers develop a new cell and animal model of inflammatory breast cancer
4. Researchers uncover a viable way for colorectal cancer patients to overcome drug resistance
5. Sexually abused boys at risk for more unsafe sex: UBC research
6. Researchers Find Gene Mutations That May Be a Key to Autism
7. LSUHSC research finds HPV-related head & neck cancers rising, highest in middle-aged white men
8. Researchers find evidence of banned antibiotics in poultry products
9. Presidential keynote address and new research highlights from the American Society of Pediatric Otolaryngology meeting
10. Scientific session and new research highlights
11. NJ stroke researchers report advances in spatial neglect research at AAN Conference
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/22/2017)... ... ... Doctors on Liens is continuing its steady expansion of medical specialties throughout ... North Valley Eye Medical Group in Mission Hills . Eye injuries and vision ... cases. These injuries have a major impact on the quality of life of ...
(Date:2/22/2017)... ... February 22, 2017 , ... The first-ever ... as organizations, advocates, and individuals join together to increase recognition about the risks ... save lives. , “Today we mark a nationwide movement to raise awareness about ...
(Date:2/22/2017)... ... 22, 2017 , ... Bellus Medical, a leader in medical ... delivery of Platelet Rich Plasma (PRP). PRP systems are used by physicians in ... synthesis and provide a faster and more efficient healing process. There are many ...
(Date:2/22/2017)... ... 22, 2017 , ... The SeniorCare Investor will host an important webinar— Seniors ... 2017, at 1:00 PM ET. A recording of the webinar will also be made ... , If you want to find out what really happened in the seniors housing ...
(Date:2/22/2017)... ... February 22, 2017 , ... ... suffer from combat-related PTSD. , Established in 1977, our organization was at the ... of military returning to civilian life were evident and served as the catalyst ...
Breaking Medicine News(10 mins):
(Date:2/22/2017)... , Feb. 22, 2017 IRIDEX Corporation ... will release financial results for the fourth quarter and ... 8, 2017.  The Company,s management team will host a ... 5:00 p.m. ET. Investors interested in listening ... (844) 707-0665 for domestic callers or (703) 326-3030 for ...
(Date:2/22/2017)... astic drugs develop from traditional single antineoplastic drug towards ... at multiple links. Research and development of antineoplastic drugs ... Download the full report: https://www.reportbuyer.com/product/4696059/ ... new tumors in China every ... industrialization and lifestyles changed by factors like urbanization, malignant ...
(Date:2/22/2017)... Summary Provides understanding and access ... agreements entered into by the worlds leading healthcare companies. ... Description The Global Non-Small Cell Lung Cancer Partnering Terms ... to partnering deals and agreements entered into by the ... partnering deals - Top deals by value ...
Breaking Medicine Technology: