IGCSE biology notes on disease and immunity should define pathogen types, active vs passive immunity, and vaccination in exam-ready sentences.

Hub: IGCSE biology notes · Disease & immunity guide · Diseases exam tips · Human health.

Immunity note page

Topic	Notes
Pathogens	Virus, bacterium, fungus, protoctist — examples
Body defences	Skin, mucus, white blood cells
Antibodies	Specific to antigen; memory cells
Vaccination	Herd immunity bullet; not 100% effective
Antibiotics	Bacteria only; resistance mechanism

Lifestyle link

Smoking, diet, exercise — cross-reference nutrition notes.

Frequently asked questions

HIV in IGCSE?

If on syllabus — virus attacking immune cells; check 0610 topic list.

Mosquito as vector?

Malaria example — one note box.

Ready to Excel in Your Studies?

Get personalised help from Tutopiya's expert tutors. Whether it's IGCSE, IB, A-Levels, or any other curriculum — we match you with the perfect tutor and your first session is free.

Book Your Free Trial