Health workers studied Helicobacter infections in two communities.
The table shows the percentage of households with access to safe drinking water and the number of new infections diagnosed per 1000 people during the same one-year period.
| Community | Households with access to safe drinking water in % | New Helicobacter infections per 1000 people |
|---|---|---|
| P | 55 | 20 |
| Q | 90 | 5 |
State the number of new Helicobacter infections diagnosed per 1000 people in community Q.
Explain how the difference in access to safe drinking water could have contributed to the different numbers of infections in the two communities.
A food handler has just used a toilet and is about to touch uncooked food. Give one action the food handler should take to reduce the chance of passing on Helicobacter bacteria.
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.