Notifications for 17 infectious diseases (26.6%) were found to be significantly correlated with a selected
search term. The use of internet metrics as a means of surveillance has not previously been described for 12 (70.6%)
of these diseases. The majority of diseases identified were vaccine-preventable, vector-borne or sexually transmissible;
cross correlations, however, indicated that vector-borne and vaccine preventable diseases are best suited for
development of early warning systems.