Which statement best describes sentinel surveillance?

Which statement best describes sentinel surveillance?

• A. It tracks only human cases.
• B. It uses sentinel species to detect outbreaks early.
• C. It requires no testing.
• D. It has no benefits.

Answer: (B)

Sentinel surveillance relies on monitoring selected indicator sources—often sentinel species or specific sites—that are expected to reflect broader disease activity. By regularly collecting and analyzing data from these sentinels, public health can detect early signals of an outbreak before it spreads widely. That emphasis on using sentinel species to detect outbreaks early captures the essence of this approach. It isn’t limited to human cases, and sentinel systems typically involve some testing or confirmation to verify signals. It also provides real benefits like timely alerts and efficient use of resources; the other statements misstate the scope, require no testing, or deny benefits.

Sentinel surveillance relies on monitoring selected indicator sources—often sentinel species or specific sites—that are expected to reflect broader disease activity. By regularly collecting and analyzing data from these sentinels, public health can detect early signals of an outbreak before it spreads widely. That emphasis on using sentinel species to detect outbreaks early captures the essence of this approach. It isn’t limited to human cases, and sentinel systems typically involve some testing or confirmation to verify signals. It also provides real benefits like timely alerts and efficient use of resources; the other statements misstate the scope, require no testing, or deny benefits.