Go Back   This Blue Marble, a Global Current Events Discussion Forum > Health and Medicine > Flu Clinic > Flu Prep

Flu Prep This room is dedicated only to discussion of medical preparation for flu and the mitigation of the spread or symptoms of influenza. Please use the Prep Room for generic prep discussions (food, water, security, etc.)

Reply
 
Thread Tools Search this Thread Display Modes
Old 01-21-2014, 12:35 PM   #1
blue gecko
Simplify, Do or Die
 
blue gecko's Avatar
 
Join Date: Aug 2008
Location: Arkansas
Posts: 10,514
Thanks: 2,335
Thanked 4,155 Times in 1,721 Posts
Default Flu Transmission and Humidity Link

http://www.sciencedaily.com/releases...0227183456.htm

Feb. 27, 2013 — Higher humidity levels indoors can significantly reduce the infectivity of influenza virus particles released by coughing, according to research published February 27 in the open access journal PLOS ONE by John Noti and colleagues from the National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention.


http://www.plospathogens.org/article...67C4BB.ambra01

Author Summary

In temperate regions influenza epidemics recur with marked seasonality: in the northern hemisphere the influenza season spans November to March, while in the southern hemisphere epidemics last from May until September. Although seasonality is one of the most familiar features of influenza, it is also one of the least understood. Indoor crowding during cold weather, seasonal fluctuations in host immune responses, and environmental factors, including relative humidity, temperature, and UV radiation have all been suggested to account for this phenomenon, but none of these hypotheses has been tested directly. Using the guinea pig model, we have evaluated the effects of temperature and relative humidity on influenza virus spread. By housing infected and naïve guinea pigs together in an environmental chamber, we carried out transmission experiments under conditions of controlled temperature and humidity. We found that low relative humidities of 20%–35% were most favorable, while transmission was completely blocked at a high relative humidity of 80%. Furthermore, when guinea pigs were kept at 5 °C, transmission occurred with greater frequency than at 20 °C, while at 30 °C, no transmission was detected. Our data implicate low relative humidities produced by indoor heating and cold temperatures as features of winter that favor influenza virus spread.


http://news.nationalgeographic.com/n...-humidity.html

Earlier studies of humidity and the flu had focused on relative humidity and found no link, said lead author Jeffrey Shaman at Oregon State University, whose findings appear tomorrow in the journal Proceedings of the National Academy of Sciences.

After reanalyzing these past studies, which also contained data on absolute humidity, Shaman's team found a much more powerful connection.

"Absolute humidity conditions explain most of these changes," Shaman said.

The researchers do not know exactly what it is about low absolute humidity that the flu virus likes. But they suggest that absolute humidity levels be raised in buildings such as hospitals and medical clinics where the disease most often spreads.

"This gets us a big step closer to one type of mechanism" for how the flu spreads, said epidemiologist Marc Lipsitch of Harvard University.
__________________
Life is short. Break the rules. Forgive quickly.
Kiss slowly. Love truly. Laugh uncontrollably,
and never regret anything that made you smile.


Women are Angels and when someone breaks our wings we simply continue to fly...on a broomstick. We are flexible like that
blue gecko is offline   Reply With Quote
The Following 3 Users Say Thank You to blue gecko For This Useful Post:
CanadaSue (01-21-2014), Exodia (01-21-2014), rb. (01-22-2014)
Old 01-22-2014, 12:21 AM   #2
rb.
Climate Change is FAKE NEWS
 
Join Date: Aug 2008
Posts: 14,444
Thanks: 2,726
Thanked 3,986 Times in 1,877 Posts
Having been battling indoor RH at home, I find this interesting. Working very hard at getting it somewhere between 40% and 50%. Each time the Arctic air drops down (temps -15 to -20 or lower) the same actions result in a reading of 20%. 80% would be impossible this time of year.
__________________
Unbelievably, Trudeau 2.0 is far, far worse than Trudeau 1.0
rb. is offline   Reply With Quote
Old 01-22-2014, 01:02 AM   #3
blue gecko
Simplify, Do or Die
 
blue gecko's Avatar
 
Join Date: Aug 2008
Location: Arkansas
Posts: 10,514
Thanks: 2,335
Thanked 4,155 Times in 1,721 Posts
I find there are some tricks you can use to get the humidity up:

grow indoor plants and mist them with water regularly
hang laundry indoors in the winter
open the dishwasher door as soon as it finishes
take showers instead of baths
keep a pot of water simmering on the wood stove
keep a spritz bottle of water handy and mist water into the air periodically
use a nasal saline spritz bottle handy and keep the membrane in your nose moistened
drink plenty of water
__________________
Life is short. Break the rules. Forgive quickly.
Kiss slowly. Love truly. Laugh uncontrollably,
and never regret anything that made you smile.


Women are Angels and when someone breaks our wings we simply continue to fly...on a broomstick. We are flexible like that
blue gecko is offline   Reply With Quote
Reply

Tags
flu, humidity, link, transmission

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 07:20 PM.


Powered by vBulletin®
Copyright © Jelsoft Enterprises Ltd.