Navigation Links
A comparison of severe outcomes during the waves of pandemic (H1N1) 2009
Date:11/9/2010

The second wave of the pandemic (H1N1) was substantially greater than the first with 4.8 times more hospital admissions, 4.6 times more deaths and 4 times more ICU cases, according to a study published in CMAJ (Canadian Medical Association Journal) (pre-embargo link only) http://www.cmaj.ca/embargo/cmaj100746.pdf. However, because of the larger number of people hospitalized during the second wave compared to the first, the percentage of people with severe outcomes was smaller.

The researchers compared demographic and clinical characteristics as well as outcomes of patients with (H1N1) influenza admitted to hospital during the first wave with those admitted during the second wave and post-peak period of the pandemic.

In the first wave, Nunavut, Manitoba and Quebec had the highest rates for hospital admissions. In the second wave, all provinces and territories were affected with the Maritimes provinces, Alberta, British Columbia, the Yukon Territory and the Northwest Territories experiencing much higher rates of hospital admission than in the first one. Quebec and Ontario were impacted in both waves, with Quebec reporting the highest number of hospitalizations and Ontario reported the most deaths overall.

At the height of the first wave (May 31 to June 20, 2009), 9.4% of hospital admissions, 10.1% of ICU admissions and 10% of deaths occurred. At the height of the second wave (October 25 to November 14, 2009), 51% of overall hospital admissions, 49.4% of ICU admissions and 53% of deaths occurred.

ICU admissions and deaths as a percentage of hospitalizations went down in the second wave.

"The second wave was substantially larger and, although the patients admitted to hospital were older and more of them had underlying conditions, a smaller proportion had a severe outcome," writes Melissa Helferty, Public Health Agency of Canada and coauthors. "The differences are thought to be due mainly to public health and clinical interventions implemented between the first and second waves."

"A national seroprevalence survey at the end of the first wave would have allowed us to better qualify the severity of the cases in Canada and permitted a more accurate comparison with other countries," conclude the authors.


'/>"/>

Contact: Kim Barnhardt
kim.barnhardt@cmaj.ca
613-520-7116 x2224
Canadian Medical Association Journal
Source:Eurekalert

Related medicine news :

1. Comparison shows robot-assisted option offers advantages for kidney surgery
2. Comparison of available breast cancer risk assessment tools shows room for improvement
3. UT Southwestern investigators perform head-to-head comparison of incontinence treatments
4. What's The Best Whole House Water Purification System? Sweetwater LLC Provides Comparison
5. Web Site for Hospital Comparisons Is Faulty: Study
6. Local Blood Supply Impacted by Wednesdays Severe Snow Storm
7. Severe sleep apnea decreases frequency of nightmare recall
8. Severe Sleep Apnea Has Silver Lining
9. H1N1 learnings: Risk factors for severe outcomes among patients admitted to hospital with H1N1
10. Obesity -- mild or severe -- raises kidney stone risk
11. Larynx preservation treatments result in low instance of severe voice disability, nutritional dysfunction
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/27/2016)... ... June 27, 2016 , ... TherapySites, ... its affiliation with Tennessee Counseling Association. This new relationship allows TherapySites ... Tennessee Counseling Association, adding exclusive benefits and promotional offers. , "TCA is extremely ...
(Date:6/26/2016)... ... , ... Quality metrics are proliferating in cancer care, and are derived from ... of the beholder, according to experts who offered insights and commentary in the current ... For the full issue, click here . , For the American Society of ...
(Date:6/26/2016)... ... ... a legally blind and certified personal trainer is helping to develop a weight loss fitness ... to fix the two major problems leading the fitness industry today:, , ... They don’t eliminate all the reasons people quit their exercise program ...
(Date:6/25/2016)... ... ... The temporary closing of Bruton Memorial Library on June 21 due to a possible lice ... overlooked aspect of head lice: the parasite’s ability to live away from a human host, ... a necessary one in the event that lice have simply gotten out of control. , ...
(Date:6/25/2016)... , ... June 25, 2016 , ... ... and non-athletes recover from injury. Recently, he has implemented orthobiologic procedures as a ... area —Johnson is one of the first doctors to perform the treatment. Orthobiologics ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... CHAPEL HILL, N.C. , June 24, 2016 ... in healthcare decisions and regulators/payers have placed more ... this new environment, patient support programs in the ... support for patients, medications. Consequently, pharmaceutical companies are ... to ensure they are providing products and services ...
(Date:6/24/2016)... 24, 2016  Global Blood Therapeutics, Inc. (GBT) (NASDAQ: ... novel therapeutics for the treatment of grievous blood-based ... closing of its previously announced underwritten public offering ... public offering price of $18.75 per share. All ... by GBT. GBT estimates net proceeds from the ...
(Date:6/24/2016)... , June 24, 2016 ... Markets has announced the addition of the " ... offering. This ... and provides an updated review, including its applications in ... the total market, which includes three main industries: pharmaceutical ...
Breaking Medicine Technology: