Boy van Poppel and Santiago Buitrago the latest to leave due to the virus.
Hot off his Flanders victory, the Katusha rider is the top favorite for Wednesday's Scheldeprijs that starts without Kittel or Cavendish
Marcel Kittel leads the field of sprinters at the Giro, which kicks off May 9. Will he rule the mass gallops on the Italian roads?
The trio joins a group of veterans already confirmed to race on the team next year
American squad UnitedHealthcare will continue its European schedule Sunday with the Clasica de Almeria.