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...