A viral disease spread among residents of five care homes. Each care home had 100 residents.
The table shows the percentage of residents who had been vaccinated before the outbreak and the number who caught the disease.
| Care home | Residents vaccinated (%) | Residents who caught the disease |
|---|---|---|
| P | 74 | 31 |
| Q | 82 | 19 |
| R | 88 | 12 |
| S | 93 | 5 |
| T | 96 | 2 |
Describe what the data suggest about vaccination and the occurrence of the disease.
87 exam-style questions on Edexcel GCSE Biology 5.3 Immune system and medicines, covering 5.3.1 The specific immune system, 5.3.2 Response to immunisation, 5.3.3 Advantages and disadvantages of immunisation, 5.3.4 Antibiotics and bacterial infections, 5.3.5 Aseptic techniques in culturing, 5.3.6 Cross-sectional areas of cultures, 5.3.7 Stages of developing new medicines, and 5.3.8 Production of monoclonal antibodies. Each one has a worked solution and a mark scheme showing where the marks go.