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

Flu Clinic A special wing of TBM's Health and Medicine forum set aside for discussing all issues related to influenza, pH1N1, H5N1 or seasonal. Please use the subrooms as appropriate.

Reply
 
Thread Tools Search this Thread Display Modes
Old 07-27-2015, 11:10 PM   #1
Kassy
Eurothrash
 
Kassy's Avatar
 
Join Date: Aug 2008
Location: EU ~ NL ~ 0 0 0
Posts: 8,424
Thanks: 237
Thanked 261 Times in 215 Posts
Default Some vaccines support evolution of more-virulent viruses

Less-than-perfect vaccines create a 'leaky' barrier against the virus, so vaccinated individuals sometimes do get sick, but typically with less-virulent symptoms. Because the vaccinated individuals survive long enough to transmit the virus to others, the virus also is able to survive and to spread throughout a population. "In our tests of the leaky Marek's-disease virus in groups of vaccinated and unvaccinated chickens, the unvaccinated died while those that were vaccinated survived and transmitted the virus to other birds left in contact with them," Nair said. "Our research demonstrates that the use of leaky vaccines can promote the evolution of nastier 'hot' viral strains that put unvaccinated individuals at greater risk."

http://phys.org/news/2015-07-vaccine...t-viruses.html

*

I read this and it made me think of you guys/girls. Anyway this so sounds like what happened with flu in poultry stocks (add in side effects from monoculture, bad biosafety practices).

We never make a perfect flu vaccine - we go for max protection for the mass but it is too variable to really stop it. We do the same or worse for poultry and as long as there is enough of that around it might promote nastier avian variants. (How well they can jump to humans is another issue).
__________________
Free hugs
Kassy is offline   Reply With Quote
Old 07-28-2015, 06:16 AM   #2
flourbug
Don't wrestle with a pig. The pig enjoys it and you get muddy.
 
flourbug's Avatar
 
Join Date: Aug 2008
Location: LOL, Florida!
Posts: 25,467
Thanks: 6,302
Thanked 10,571 Times in 4,619 Posts
Kassy! You had better have a good excuse for your absence! I thought you must have died!
flourbug is offline   Reply With Quote
The Following 2 Users Say Thank You to flourbug For This Useful Post:
Feather (07-28-2015), Mousehound (07-28-2015)
Old 01-13-2016, 05:00 PM   #3
Malcolm
Senior Level 3
 
Malcolm's Avatar
 
Join Date: Aug 2008
Location: Australia
Posts: 3,366
Thanks: 2
Thanked 277 Times in 201 Posts
If any-one has an interest in vaccines or is "anti-vaccine" you will find this interesting.
Some-one has written a thesis in an Australian Uni. that is a "bombshell"

http://www.abc.net.au/news/2016-01-1...an-phd/7086346
Malcolm is offline   Reply With Quote
Reply

Tags
evolution, morevirulent, support, vaccines, viruses

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 01:32 AM.


Powered by vBulletin®
Copyright © Jelsoft Enterprises Ltd.