Abstract: Illness states are reported to create disparate data sets associated with illness reports. The illness reports are verified by comparing and correlating information in the data sets. Illness reports are indicated by location-specific markers displayed on a map of a particular geographical region of interest by a computing device having a display screen. Illness reports having associated data in both data sets are considered to be verified, and thus to have a higher level of relevance as more reliable, more persuasive, more severe, and/or more accurate. Verification indicators are displayed on the display screen in association with each marker for which the associated illness report has been verified. Accordingly, reported illnesses are displayed on a geographically-relevant basis in differentiated fashion to provide a visual indication of verified and unverified reported illnesses.