The Pediatric Early Warning Sentinel Surveillance (PEWSS) is a year-round surveillance system developed by the Southern Nevada Health District to identify the pathogens responsible for respiratory disease circulating in the community. Each week, several sentinel health care providers submit nasal swabs to the Southern Nevada Public Health Laboratory (SNPHL) for testing. The specimens are collected from children who present with a fever >100°F accompanied by a cough and/or sore throat.