CAIE IGCSE Biology 16.6.1 Defining a Sexually Transmitted Infection
Practise defining a sexually transmitted infection as an infection passed between people through sexual contact.
- Syllabus
- 2026–2028
- Course
- Biology 0610
Practise defining a sexually transmitted infection as an infection passed between people through sexual contact.
Fig. 4.1 is a diagram of the human female reproductive system.

Fig. 4.1
Chlamydia is caused by a bacterium.
State the name of one other STI.
HIV ;