An attempt by doctors to set up overdose prevention sites on hospital property in Nanaimo and Victoria was shut down Monday by the Island health authority, forcing the volunteers to move their operations across the street. 

Doctors and other volunteers tried to set up sites on the grounds of Nanaimo General and Royal Jubilee hospitals over frustration that the B.C. government hasn't lived up to its promise to set aside space for overdose prevention at the health-care facilities. 

Dr. Jess Wilder,…