Navigation Links
H1N1 Unlikely to Cause Flu Pandemic in 2010-11: Analysis
Date:10/18/2010

MONDAY, Oct. 18 (HealthDay News) -- Canadian researchers say they do not expect the H1N1 virus -- the so-called swine flu -- to be very severe this year, although they are recommending that everyone over the age of 50, especially those with chronic health conditions, get immunized this fall.

Researchers in British Columbia examined the results of blood tests given to 1,127 people in the province both before and after the 2009 pandemic. Before the pandemic, less than 10 percent of children showed signs of antibodies, which are the "soldiers" in the immune system that develop resistance to specific germs. By contrast, more than three-quarters of people over the age of 80 had the antibodies, suggesting they'd been exposed to the virus before.

This helps explain why children were so severely affected by H1N1 compared to older people, the study authors noted.

In contrast, after the pandemic, 70 percent of people under the age of 20 showed signs of this type of protection, according to the report published online Oct. 18 in the CMAJ.

"The higher percentage with seroprotection [antibodies in blood] we observed in the young may have resulted from higher pandemic H1N1 infection rates and earlier prioritization of pandemic H1N1 vaccine to young children," said study co-author Dr. Danuta Skowronski, of the BC Centre for Disease Control and University of British Columbia, in a news release from the journal's publisher.

The researchers wrote that enough people appear to be protected that "these findings reassure against the likelihood of a substantial third pandemic H1N1 wave during the 2010-2011 season, unless there is a significant waning of antibody or change in the virus."

They also found that "adults 50 to 79 years exhibited the lowest seroprotection and also remain at higher risk of severe outcomes if infected. Our findings support a shift from the prioritized immunization of the young that occurred in fall 2009 to prioritized immunization of older adults for the coming 2010-2011 influenza season to protect against severe outcomes due to both pandemic and seasonal influenza."

Dr. Peter Katona, associate professor of clinical medicine at the University of California at Los Angeles, cautioned, however, that it's impossible to know for sure what the flu will do. "Flu is unpredictable regardless of what the models say and what the early surveillance says," he said in an interview. "It can go in different directions for complicated reasons that you can't figure out in advance."

In an accompanying study, researchers affiliated with Mount Sinai Hospital and the University of Toronto report that Canada's response to the epidemic offers lessons: "Last year's events clearly show that our current methods of vaccine production are too slow for an adequate response to a pandemic, that much of our planning for pandemic-related vaccination was incomplete, and that even the best intentioned program can be undermined by unanticipated internal and external events."

As for the American response, Katona said, "I'd be careful to be critical. This was a complicated and difficult task for the health authorities. They took on a huge challenge."

More information

The U.S. National Library of Medicine has more on H1N1 flu.

-- Randy Dotinga

SOURCES: CMAJ, news release, Oct. 18, 2010; Peter Katona, M.D., associate professor, clinical medicine, University of California Los Angeles


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Low levels of formaldehyde in clothing unlikely to pose health risk
2. Rest requirements for residents unlikely to improve outcomes in 2 common surgeries
3. New model suggests feared side effect of Alzheimers drugs is unlikely
4. Lead Poisoning Unlikely Cause of Beethovens Death
5. Homeless Americans Unlikely to Receive Basic Health Care
6. Anti-obesity drugs unlikely to provide lasting benefit according to scientists
7. Teamwork Unlikely to Improve Cholesterol Levels
8. Virus Unlikely to Cause Chronic Fatigue Syndrome
9. Sleep Apnea Mask May Cause Subtle Facial Changes
10. Powerful free radical causes lung damage from oxygen therapy
11. Chest news briefs: CPAP may cause facial changes
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
H1N1 Unlikely to Cause Flu Pandemic in 2010-11: Analysis
(Date:5/5/2016)... ... May 05, 2016 , ... Dermatologic surgeons performed nearly 10 million medically necessary ... percent since 2012. , The results of the 2015 ASDS Survey on Dermatologic Procedures ... cancer treatments and the growing popularity of soft-tissue fillers and body sculpting procedures. ...
(Date:5/5/2016)... ... May 05, 2016 , ... MAP Health Management, LLC, ... that Enlightened Solutions has joined the Premier Outcomes-Driven Provider Network. By becoming a ... their patients being treated for substance use. , Enlightened Solutions was founded by ...
(Date:5/5/2016)... ... 05, 2016 , ... Liposuction specialist Marcia V. Byrd, MD spoke last month ... the Marriot St. Louis Airport Hotel. This year’s conference was titled “Living with Lipedema ... her unique specialization in treating Lipedema. Dr. Byrd is considered one of the leading ...
(Date:5/5/2016)... (PRWEB) , ... May 05, 2016 , ... Nepenthe Laboratory ... Riverbend Elementary School last week to raise non-perishable food item donations for Food for ... Nose Day” hosted on NBC. , “The goal of the assembly was to create ...
(Date:5/5/2016)... , ... May 05, 2016 , ... Augusta Public Schools ... school nurses. This partnership will enable school health offices to streamline and bolster care ... County, Kansas, just east of Wichita. Augusta public schools serve 2,300 students among its ...
Breaking Medicine News(10 mins):
(Date:5/3/2016)... CITY, Mo. , May 3, 2016 /PRNewswire/ ... Kansas Medical Center,s Institute for Advancing Medical Innovation ... and commercialize new drugs, diagnostics and medical devices. ... provides BioNovus Innovations with rights to license, develop ... "This partnership represents ...
(Date:5/3/2016)... 2016  Axiogenesis has acquired a major investment from Sino-German High-Tech Fund to further expand product development, strengthen its ... http://photos.prnewswire.com/prnh/20160503/362921 ... ... ... ...
(Date:5/3/2016)... 2016 ACME Markets, ... Delaware County Councilman Dave White ... all ACME pharmacies across Delaware ... and Prevention (CDC), naloxone has saved 26,463 lives nationwide over the ... Delaware County were authorized to administer naloxone to ...
Breaking Medicine Technology: