Kv> In my youth I had a coctail against tropical diseases every 6 months and
Kv> smallpox once a year. The cocktail was the great event, you would
Kv> have a slight fever the next day and could clain to feel sick. The only
Kv> way to skip school for one day.
 
You are mixing a few things up here:
 
* An injection like against the flu already has the antibodies, the idea is
  not to make you sick to create the antibodies but not to get sick .... at
  all.
* Smallpox is good for 10 years, no need to have it every year. In this case
  you get an actual weakened virus, not antibodies.
  Right now the WHO has considered smallpox eradicated.
 
I have had such a coktail also in the military, and yes ... you do get sick of
that for a few days, but not because it is a bodily reaction against a live
(weakened) virus. It just reacts against the cocktail itself.
 
I remember feeling a little bit unwell for a short time and then we decided to
go play some sports. The uneasyness was quickly gone once one became active.
The real problem starts when getting such a cocktail and "take some rest".
 
 \%/@rd

--- D'Bridge 3.98
 * Origin: Many Glacier / Protect - Preserve - Conserve (2:292/854)