摘要:In 2006, 66 diseases and conditions were nationally notifiable in Australia. States and territories reported a total of 138,511 cases of communicable diseases to the National Notifiable Diseases Surveillance System: an increase of 10.4% on the number of notifications in 2005. In 2006, the most frequently notified diseases were sexually transmissible infec-tions (57,941 notifications, 42% of total notifica-tions), gastrointestinal diseases (27,931 notifications, 20% of total notifications) and vaccine preventable diseases (22,240 notifications, 16% of total notifi-cations). There were 19,111 notifications of blood-borne diseases; 8,606 notifications of vectorborne diseases; 1,900 notifications of other bacterial infec-tions; 767 notifications of zoonoses and 3 notifica-tions of quarantinable diseases