Other affected neighbouring communities were Meda (19,000), Desio (33,000), Cesano Maderno (34,000) and to a lesser extent Barlassina (6,000) and Bovisio-Masciago (11,000).
Prvotno so menili, da DFTD povzroča virus, vendar v rakastih celicah niso odkrili dokaza, ki bi podprl teorijo.