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What is surveillance

Surveillance is the collection, collation, analysis and interpretation of data for public health action.

Sentinel surveillance is surveillance based at designated institutions or sites, which have been selected for their geographic location, medical specialty, or ability to accurately diagnose and report high-quality data.

PAHO's hospital-based surveillance network for bacterial pneumonia and meningitis began in the Americas in 2007. Currently, the following eleven countries have been part of the surveillance network: Bolivia, Brazil, Ecuador, El Salvador, Guatemala, Honduras, Nicaragua, Panama, Paraguay, Peru and Venezuela.