Do you infect the city you are scoring?
No, you do not.

The designer has confirmed this here.


  There are a few city cards which are play immediately and refer to the number of cities you currently infect. Does that include the current city card you are in the middle of resolving? or just all the other city cards where you have cubes?
  
  
    For question one: it does not include the current city card you are resolving. It has been eradicated, so no longer among the living.