Pathogens and how disease spreads, the body's defences, immunity and vaccination.
Health is a state of physical and mental wellbeing; many diseases are caused by pathogens.
Pathogens
Microorganisms that cause disease: bacteria (e.g. cholera), viruses (e.g. influenza), fungi and protists (e.g. malaria). They spread by air, water, food, contact or vectors (e.g. mosquitoes).
Viewing only
This content is free to read on superexams.com and cannot be printed or downloaded.
Read the full note — free
Create a free account to read this note in full. Every free account gets 2 complete revision notes — no card needed.