there  was a crowdsourced  vaccine,   
   that could be created regionally by  
    most  pharmaceutical   companies    
   without  much  effort,  and it was   
   estimated   that   it  had  saved    
       tens     of      millions.       
                                        
 but it was not officially recognized  by 
 the  world  health organization, and  as 
 such did  not  give what  the sanctioned 
 (and   unobtainable)   ones   did:   the 
 subskin chip that  would let  you  enter 
       (or      leave)     cities.      
                                        
  and that's why, eventually, we would  
   create our  own  chips. they  were   
  larger than the official ones, and a  
    little  unstable,   and   needed    
    maintenance.  but  they   worked!   
  or, they would work together  with a  
   little something to make the  guard  
     look     the     other    way.     
                                      
                                      
                                          
    but the scanner showed green, so...