Disease spread refers to how infections move from one person to another or from animals to humans. This can happen through various methods, including direct contact, airborne transmission, or contaminated surfaces. Understanding these pathways helps in controlling outbreaks and protecting public health. Preventive measures, such as vaccination and good hygiene practices, are essential in reducing disease spread. For example, washing hands regularly and wearing masks can limit the transmission of viruses like influenza or COVID-19. Public health campaigns often focus on educating communities about these practices to minimize the risk of infection.