Navigation Links
Air travel and flu: Post-9/11 restrictions delayed start of season

The onset of the flu season in the USA has been shown to be influenced by air travel. After flights were restricted following the 9/11 terrorist attacks in 2001, the flu season started about two weeks later than usual.

In both the northern and southern hemispheres, influenza epidemics occur annually during the winter flu season. Given the concerns about global epidemics of serious strains of flu, such as occurred in 1918, as well as the more recent, localized outbreaks of 'bird flu', it is important to know more about how flu spreads round the world. Might airline travel play a role in the spread of the infection across large distances? If so, reducing or restricting air travel might be useful in the early stages of a serious global epidemic. Research at the Children's Hospital Boston, now published in PLoS Medicine, has investigated the effects of air travel on the annual spread of flu in the US.

The researchers analyzed government records on deaths from flu and pneumonia in cities from nine regions of the US between 1996 and 2005. For each year, they determined the time it took for the epidemic to spread across the country and the date of the national peak in flu deaths. They used government estimates of passenger air travel to explore any connection with the timing of the annual flu epidemics.

They found the usual time taken for a flu epidemic to reach peak levels across the US was about two weeks, and that the national peak date was within two days of the average date ?February 17. Flu spread more slowly in years when the number of domestic air travelers was lower. However, the most striking finding was that the peak date of the US flu season following September 11, 2001 was delayed, by 13 days, to March 2. Following the terrorist attack, there were restrictions on air travel and many people themselves chose to use other forms of transport.

The peak date then returned to February 17 over the subsequent two flu seasons, when intern
'"/>

Source:Public Library of Science


Page: 1 2

Related biology news :

1. Experiments provide proof of how traveling in groups protects insects
2. Experiments provide proof of how traveling in groups protects insects
3. Norovirus found to cause travelers diarrhea
4. Researchers develop new method for studying mental time travel
5. Drug resistance may travel same path as quorum sensing
6. Air travel and pandemic flu
7. Some butterflies travel farther, reproduce faster
8. Proteins important in Alzheimers, Parkinsons disease travel in the slow lane
9. Better health twice as likely for nonsmokers who live and work with smoking restrictions
10. Report that delayed motherhood decreases life expectancy of mouse offspring
11. Low oxygen likely made Great Dying worse, greatly delayed recovery
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Air travel and flu Post restrictions delayed start season

(Date:4/23/2014)... of asthma, allergies and other chronic inflammatory disorders among ... part to their reduced exposure to the microbes that ... paper. , The article, published in the journal ... in urban centers who have less access to green ... a condition caused by immune system dysfunction. , When ...
(Date:4/23/2014)... their mid-thirties and forties, face a devastating prognosis: ... decades. "Mutant" protein clusters, long blamed for the ... primary focus of therapies in development by pharmaceutical ... Gerardo Lederkremer and Dr. Julia Leitman of Tel ... in collaboration with Prof. Ulrich Hartl of the ...
(Date:4/23/2014)... People who have had a stroke, often suffer motor ... a study conducted in Taiwan, that will be published ... but is currently freely available on-line as an unedited ... when one group of stroke victims had their own ... brain and a similar group did not, those who ...
Breaking Biology News(10 mins):Rural microbes could boost city dwellers' health 2Rural microbes could boost city dwellers' health 3On the defensive 2On the defensive 3Autologous stem cell therapy improves motor function in chronic stroke victims 2
... Jobs, livelihoods and ecotourism industries can benefit from having ... coral reefs, marine researchers say. Despite their small ... often get more attention, herbivorous fish play a vital ... support the livelihoods of 500 million people worldwide, say ...
... 8th May 2012. A group of researchers from the ... INAD (Hospital del Mar Neuropsychiatry and Addictions Institute) has ... general overview at a chemical, pharmacological and behavioural level ... the Recreational Drugs European Network, as a new abused ...
... It is increasingly recognized that chronic psychotropic drug ... Indeed, clinical studies in humans present an intriguing picture: ... may contribute to cortical gray matter loss in patients, ... and mania, may preserve gray matter in patients. ...
Cached Biology News:Weed-eating fish 'help protect jobs, livelihoods' 2Weed-eating fish 'help protect jobs, livelihoods' 3Internet and new drugs: A challenge for public health 2Psychiatric medication effects on brain structure 2
(Date:1/14/2014)... AUSTIN, Texas , Jan. 14, 2014 ... analyze and research medicinal plants and therapeutic derivatives ... industry, health professionals, and researchers about the challenges ... (Logo: http://photos.prnewswire.com/prnh/20100430/DC95601LOGO ) The ...
(Date:1/14/2014)... In recent years, growing suspicion about the pharmaceutical ... and promotion has led to unprecedented levels of public ... about the insidious impact of commercialization of research, has ... the world’s biggest pharmas for illegal marketing activities, allegations ...
(Date:1/14/2014)... 2014   Kinaxis ®, provider of RapidResponse ®, a ... operations planning ( S&OP ) service, is proud to be ... will be held at the Hilton San Diego Bayfront, January ... Elisabeth Kaszas , Director of Supply Chain at Amgen, ...
(Date:1/14/2014)... NY (PRWEB) January 14, 2014 During the ... now known as “The Doctor’s Plague.” In this time period, ... hands. This led, at times, to the death of vulnerable ... today don’t know that they may be unwittingly transmitting herpes ...
Breaking Biology Technology:World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 2World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 3World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 4World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 5World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 6World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 7World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 8The Sunshine Act: Necessary Regulation or Unnecessary Dysregulation? New Life Science Webinar Hosted by Xtalks and IRB Services 2The Sunshine Act: Necessary Regulation or Unnecessary Dysregulation? New Life Science Webinar Hosted by Xtalks and IRB Services 3Event Alert: Kinaxis Customer to Present at the Biomanufacturing Summit "Supply Chain: Improving Network Effectiveness" 2Study: Fatigued Medical Interns Infect Their Patients with Herpes Viruses; The CBCD Sees a Parallel with “The Doctor’s Plague” 2Study: Fatigued Medical Interns Infect Their Patients with Herpes Viruses; The CBCD Sees a Parallel with “The Doctor’s Plague” 3
... Attention To ,The Sneak Thief of Sight, NEW ... one of the,main causes of blindness around the globe, ... have announced the first annual,World Glaucoma Day, to be ... marked,by awareness and educational events organized by glaucoma institutions ...
... Inc.,(Nasdaq: HOLX ) today announced that Patrick Sullivan, ... presenting at the Merrill,Lynch Global Pharmaceutical, Biotechnology and Medical ... Hyatt Hotel in New York, NY., Interested parties ... of,Hologic,s investor presentation on Tuesday, February 5, 2008 at ...
... AlphaVax has,assembled its Cytomegalovirus (CMV) Advisory Board to provide ... candidates through clinical,development. To be chaired by Dr. Robert ... -- Mark Schleiss, MD, Professor, Associate Head ... Legion Chair in the Department of Pediatrics and Director, ...
Cached Biology Technology:World Glaucoma Day Set for March 6th 2Hologic to Present at Merrill Lynch Global Pharmaceutical, Biotechnology and Medical Device Conference 2AlphaVax Announces New CMV Advisory Board 2
Enables rapid purification of double-stranded DNA fragments = 200 bp, including, for example, PCR reaction products, DNA fragments obtained in restriction enzyme digests, or double-stranded cDNA...
5 minutes from gel band to purified DNA...
... commonly used in baculovirus plaque ... agaroses either contain contaminants that ... or lack the physical characteristics ... Novagen's BacPlaque Agarose is pre-qualified ...
...
Biology Products: