HOME >> MEDICINE >> NEWS
Recirculated airplane cabin air does not cause more colds

s," Balmes said. "We couldn't study that."

Balmes points out that the study measured the rates of colds reported by the passengers. The researchers did not culture viruses to prove the passengers actually had cold virus infections. Analysis of the results revealed that people who believed air travel increases the risk of colds did not report more post-flight colds. Females reported colds more frequently than males.

In the early 1980s, to increase fuel efficiency, aircraft manufacturers began to build ventilation systems that recirculated cabin air. Older systems had used 100 percent fresh air, compressed, humidified and cooled by the engines in an energy-demanding process. Although air recirculation had been shown to increase rates of transmission of cold viruses in army barracks, the issue had not been studied in airplanes.

The study focused on a comparison between Boeing 737s and Boeing 727s, as well as between different DC-10 models. The two Boeing craft have similar seating arrangements, cabin airflow patterns and fuselage size, but 737s recirculate about half of the cabin air, while 727s use 100 percent fresh air. Similarly some DC-10s do and some do not recirculate cabin air.

Passengers were accepted for the study only if they had not flown during the previous week, including a connecting flight on the interview day; they had no plans for additional air travel before the follow-up interview; they did not have a cold when the initial questionnaire was distributed.


'"/>

Contact: Wallace Ravven
wravven@pubaff.ucsf.edu
425-476-2557
University of California - San Francisco
23-Jul-2002


Page: 1 2

Related medicine news :

1. Uncovering tumors, hidden subs, and cracks in airplanes using math
2. UT Southwestern researchers find automated external defibrilators are safe and effective aboard airplanes
3. Aircraft cabin ventilation influences the transmission of diseases in-flight
4. Exercise-induced shortness of breath not always caused by asthma
5. U of M researcher says Viagra may cause permanent vision loss in some men
6. New estimates for the causes of child deaths worldwide
7. Study provides new estimates of the causes of child mortality worldwide
8. New guideline tackles leading cause of mother and child death
9. Decreased levels of good cholesterol in children with Progeria may cause premature heart disease
10. Study finds indoor allergen levels vary, cockroach allergens cause more asthma symptoms
11. LRRK2 gene mutation causes Parkinsons disease in several families

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:10/13/2017)... ... October 13, 2017 , ... PurhealthRX , a leading Health and ... Applying the Purzorb™process to full spectrum CBD oil will revolutionize the rapidly growing CBD ... that can be easily incorporated into liquid products, while reducing costs to end users. ...
(Date:10/13/2017)... OBISPO, Calif. (PRWEB) , ... October 13, 2017 , ... ... or dementia. However, many long-term care insurance companies have a waiver for care if ... the 90-day elimination period, when the family pays for care, is often waived, so ...
(Date:10/13/2017)... Texas (PRWEB) , ... October 13, 2017 , ... Yisrayl ... this week that explains one of the most popular and least understood books in ... like cryptic and puzzling descriptions that have baffled scholars for centuries. Many have tossed ...
(Date:10/13/2017)... ... October 13, 2017 , ... “America On The Brink”: the ... “America On The Brink” is the creation of published author, William Nowers. Captain ... As a WWII veteran, he spent thirty years in the Navy. Following his ...
(Date:10/12/2017)... (PRWEB) , ... October 12, 2017 , ... ... products to meet the demand of today’s consumer and regulatory authorities worldwide. From ... probiotic experts and tested to meet the highest standard. , These products ...
Breaking Medicine News(10 mins):
(Date:9/25/2017)... Sept. 25, 2017   Montrium , an ... solutions, today—from the IQPC Trial Master Files & ... NL)—announced that EastHORN Clinical Services has selected ... and TMF management. EastHORN, a leading European contract ... to increase transparency to enable greater collaboration with ...
(Date:9/19/2017)... medical device company developing a non-invasive, robotically assisted, platform therapy that uses pulsed sound energy ... ... Jim Bertolina, PhD ... Tom Tefft ... executive Josh Stopek , PhD, who has led R&D and business development teams at ...
(Date:9/12/2017)... , Sept. 12, 2017   EcoVadis , the leading platform for ... the first annual edition of its Global CSR Risk and Performance Index. ... by EcoVadis, based on Scorecard Ratings that analyzed nearly 800,000 data points ... ... ...
Breaking Medicine Technology:
Cached News: