A gastrointestinal illness outbreak has gripped a South Jersey elementary school, prompting public health experts to urge caution ahead of the holidays. The outbreak, occurring at Central Elementary School in Haddonfield, has raised concerns about the potential for further infections during the winter season. Since December 10, the school has reported an unusual increase in children experiencing symptoms such as nausea, vomiting, and other gastrointestinal issues. The exact number of affected students remains unknown, but the situation has prompted a heightened response from local health authorities. The outbreak's scope expanded on Friday when the school reported a surge in illnesses to the county's Department of Health and Human Services. Gastrointestinal illnesses, often caused by bacteria, parasites, or viruses like norovirus, can be highly contagious and survive on high-touch surfaces for extended periods. The winter season and holiday gatherings pose a higher risk for outbreaks due to increased indoor activities and shared spaces. Norovirus, in particular, spreads through contact with fecal matter or contaminated surfaces, making it a significant concern in schools and communities. Young children, seniors, and those with weakened immune systems are at higher risk of complications. Public health experts emphasize the importance of thorough handwashing and effective cleaning protocols to prevent the spread of gastrointestinal illnesses. The county health department is collaborating with the affected school district to enhance cleaning and sanitizing efforts, focusing on areas with higher concentrations of ill students. At home, families should use cleaning supplies effective against viruses like norovirus, which can be resistant to non-bleach products. The county's public health team also works with local health systems to collect surveillance data, aiding in early outbreak detection and identifying new public health threats, including potential variants of known viruses.