• FluTrackers.com Inc. does not provide medical advice. Information on this web site is collected from various internet resources, and the FluTrackers board of directors makes no warranty to the safety, efficacy, correctness or completeness of the information posted on this site by any author or poster. The information collated here is for instructional and/or discussion purposes only and is NOT intended to diagnose or treat any disease, illness, or other medical condition. Every individual reader or poster should seek advice from their personal physician/healthcare practitioner before considering or using any interventions that are discussed on this website. By continuing to access this website you agree to consult your personal physican before using any interventions posted on this website, and you agree to hold harmless FluTrackers.com Inc., the board of directors, the members, and all authors and posters for any effects from use of any medication, supplement, vitamin or other substance, device, intervention, etc. mentioned in posts on this website, or other internet venues referenced in posts on this website.
  • We are not asking for any donations. Do not donate to any entity who says they are raising funds for us.

USA Flu Season Historical Peak - Are We Near It?

sharon sanders

sharon sanders

Editor-in-Chief & President
Historically speaking week 10 is the peak of the influenza season in the US.


Pneumonia and Influenza (P&I) Mortality Surveillance

During week 7, 7.4% of all deaths reported through the 122-Cities Mortality Reporting System were due to P&I. This percentage was below the epidemic threshold of 7.9% for week 7.
picurve07.gif



If the trend conforms to past years, is this because the vaccine for A/H1N1 and the number of people who have been infected (which would total 1/2 of the US population, approximately) have together muted the effect of the pandemic for these particular weeks? Of course, future waves are unpredictable and another one could occur again.
 
Re: USA Flu Season Historical Peak - Are We Near It?

Considering that "under age 18" seem to have the highest hospitalizations, watching for increasing school absences for ILI might be an important clue. Some states report and graph school absences, making it easy to see a trend.

Additionally, college-age students are tracked through ACHA http://www.acha.org/ILI_Project/ILI_LatestWeek.cfm. The number of cases rose 52% from last week.
 
Re: USA Flu Season Historical Peak - Are We Near It?

Eurosurveillance, Volume 15, Issue 6, 11 February 2010

"...The delayed circulation of RSV observed in 2009-10 compared with 2008-09 suggests that the early circulation of the 2009 pandemic influenza A(H1N1) viruses had an impact on the RSV epidemic.

The emergence and spread of the 2009 pandemic influenza A(H1N1) virus during summer 2009 in northern and central America and in parts of Europe suggested that the epidemic wave would occur in Europe in September, according to weather conditions and social habits (start of the new school year). However, in early September 2009 while cases of clinical influenza-like illness (ILI) were increasing in France, Sweden and other European countries, the detection of 2009 pandemic influenza A(H1N1) remained sporadic...

...the pattern observed this winter 2009-10, with the almost complete disappearance of seasonal influenza viruses and the delayed and reduced RSV epidemic as opposed to an unchanged rhinovirus epidemic, emphasises how interactions between respiratory viruses can lead to changes in the circulation patterns and impact of different winter respiratory viruses. In addition, the implementation of mitigation measures and the changes in social behaviour in the context of the pandemic may also have played a role in this unusual pattern of hibernal respiratory virus epidemics."

http://www.eurosurveillance.org/ViewArticle.aspx?ArticleId=19485
 
You must log in or register to reply here.
Back
Top Bottom