A patient with HIV has the number of virus particles in their blood measured before and after antiretroviral treatment.
| Time | Virus particles per mL of blood |
|---|---|
| Before treatment | 80 000 |
| After treatment | 400 |
The patient claims that the treatment means using a condom would provide no further protection against HIV transmission.
Evaluate this claim using the data.
112 exam-style questions on Edexcel GCSE Biology 5.1 Health and communicable disease, covering 5.1.1 Communicable and non-communicable diseases, 5.1.2 Disease susceptibility interactions, 5.1.3 Pathogens as disease-causing organisms, 5.1.4 Common infections, 5.1.5 Spread and prevention of pathogens, 5.1.6 Lifecycle of a virus, and 5.1.7 Spread and prevention of STIs. Each one has a worked solution and a mark scheme showing where the marks go.