There are several methods to conduct surveillance, including:
Passive Surveillance: This relies on healthcare providers to report cases of diseases to health authorities. It's cost-effective but may suffer from underreporting. Active Surveillance: Health authorities actively seek out cases by contacting healthcare providers and laboratories. This method is more comprehensive but resource-intensive. Sentinel Surveillance: Selected healthcare providers report all cases of certain diseases. This method provides high-quality data but may not capture all cases. Syndromic Surveillance: This method uses health-related data (e.g., emergency room visits) to identify outbreaks before diagnoses are confirmed.
