Sentinel Surveillance: Data is collected through reports from selected 'sentinel' sites, to understand the disease burden, monitor trends and detect outbreaks. This system is used when high-quality data are needed about a particular disease that cannot be obtained through a passive system e.g. in AFP surveillance. The sentinel site is usually a hospital, health center, laboratory, rehabilitation center or other facility which attends to a relatively large number of cases of the disease.
Reporting units for VPD Surveillance
A reporting unit is a health facility/individual in private or public sector, located in rural or urban area. Designated health workers/paramedical staff and medical officer/practitioner working in various health facilities collect information on VPDs in the specified formats and report these in a timely manner to the next higher level.
Follow these rules when reporting the total number of cases and deaths seen during a reporting period (month or week):
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ƒ Zero reporting: Submit nil reports even if there are no VPD cases seen.
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ƒ Avoid double counting: if a child makes two visits to the health center for the same disease episode count it as one case only.
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ƒ Count only those cases which have been diagnosed by the health personnel.
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