Table 1. Definition and time period of three severe acute respiratory infection (SARI) case definitions used in sentinel surveillance in Oman, January 2008-June 2013.
| Case Definition 1 | Case Definition 2 | Case Definition 3 | |
|---|---|---|---|
| Time Period | January 2008-December 2009 | January 2010-December 2011 | January 2012-June 2013 |
| 2–59 months old | ≥31 days old | ||
| + Hospitalized | + Hospitalized | ||
| + Cough OR tachypnea | + History of fever | ||
| + At least 1 danger sign of pneumonia a | OR current fever (≥38°C) OR current hypothermia (<35.5°C) | Hospitalized | |
| + At least 1 sign of respiratory infection b | + Cough AND fever (≥38°C) in the last 7 days | ||
| OR | OR | ||
| ≥5 years old | ≥31 days old | OR | |
| + Hospitalized | + Hospitalized | Hospitalized | |
| + Fever (≥38°C) | + At least 1 physician assessment criterion c | + Clinically suspected respiratory infection | |
| + Cough OR sore throat | |||
| + Shortness of breath OR difficulty breathing |
aDanger signs of pneumonia included nasal flaring, chest in-drawing, inability to breast-feed, vomiting, grunting, convulsions, stridor, tachypnea, and lethargy.
bSigns of respiratory infection included abnormal breath sounds, tachypnea, cough, sputum production, hemoptysis, chest pain, sore throat, and dyspnea.
cPhysician assessment criteria included severe influenza-like illness, pandemic H1N1 2009, suspected or x-ray confirmed pneumonia, and other respiratory illness.