Chain of Infection

The Chain of Infection is a process that describes how infections spread. It involves six key components: a pathogen (germ), a reservoir (where it lives), a portal of exit (how it leaves), a mode of transmission (how it spreads), a portal of entry (how it enters a new host), and a susceptible host (who can get infected). Breaking any link in this chain can prevent the spread of disease, highlighting the importance of hygiene, vaccination, and public health measures to protect individuals and communities from infections.