Infecting or contaminating refers to the process by which harmful microorganisms, such as bacteria, viruses, or fungi, enter and multiply in a host or environment. This can lead to diseases or spoilage, affecting health and safety. Common examples include foodborne illnesses caused by contaminated food or water. Infection can occur through various routes, including direct contact, inhalation, or ingestion. Preventive measures, such as proper hygiene, vaccination, and sanitation, are essential to reduce the risk of infection. Understanding how contamination occurs helps in managing and controlling outbreaks, protecting both individuals and communities from potential harm.