The H1N1 virus, also known as swine flu, originated in Mexico and spread to the United States, causing outbreaks. It can affect people of all age groups and causes mild to severe symptoms, ranging from fever and cough to body aches and vomiting. Schools have been impacted by closing classes and cancelling activities when outbreaks occur due to student and staff absences. Public health officials recommend measures like staying home when sick, hand washing, cleaning surfaces, and temporary school closures to limit disruption and spread of the virus. The H1N1 virus remains a serious public health issue.