Prev Previous Post   Next Post Next
  #1  
Old 03-22-2020, 04:28 AM
RivkahChaya's Avatar
RivkahChaya is offline
Guest
 
Join Date: Feb 2012
Posts: 10,837

Two Strains?


The "two-strain" theory.

I have read this theory of covic-19 in a couple of places that are very respectable, and since this is exactly the way smallpox worked, I don't think it's impossible.

The idea is that there are two major strains of Covid-19: one is pretty deadly, and one is very mild. Age and general health are still factors in whether you live or not, but another major factor is the strain you have. When you hear in the same day of a young person dying, and an elderly person living, they likely had different strains. IIRC, the death rate of variola major was 90%, but the death rate of variola minor was only about 20%. And since V. minor left people healthy enough to be up and about, V. minor spread more rapidly.

For a long time, the very similar disease vaccinia (cowpox) was used to inoculate against variola-- but one the difference was discovered, the inoculation was done with variola minor.

IANAD, but as I understand it, the smallpox vaccine worked by giving the recipient a smallpox infection of the skin, using an the mild strain. It would be fought off with little lasting effects other than the distinctive scar, because smallpox doesn't become systemic when it enters the skin, but we develop antibodies all the same.

If researchers can successfully isolate the minor strain, that may be 1/2 way toward developing a vaccine.
__________________
"There's always a non-Voodoo explanation for everything." ~Adrian Monk
 

Bookmarks

Thread Tools
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 Off
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 10:26 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.

Send questions for Cecil Adams to: cecil@straightdope.com

Send comments about this website to: webmaster@straightdope.com

Terms of Use / Privacy Policy

Advertise on the Straight Dope!
(Your direct line to thousands of the smartest, hippest people on the planet, plus a few total dipsticks.)

Copyright © 2019 STM Reader, LLC.

 
Copyright © 2017