Brainlag PlusThe diseases Edexcel names beyond the core list: cholera, tuberculosis, Chalara ash dieback, stomach ulcers, Ebola and chlamydia alongside malaria and HIV, with their signs, spread and control, how HIV makes tuberculosis more likely, disease data, and (Biology only) the lytic and lysogenic pathways.
The Edexcel diseases
Edexcel expects you to know the pathogen, the signs, how each disease spreads and how its spread is reduced.
| Disease | Pathogen | Signs | Spread | Reduced by |
|---|---|---|---|---|
| Cholera | Bacterium | Watery diarrhoea | Water contaminated with faeces | Clean, treated water; sewage kept out |
| Tuberculosis | Bacterium | Lung damage, long cough | Airborne droplets | Isolation, ventilation, antibiotics, BCG vaccine |
| Chalara ash dieback | Fungus | Leaf loss, bark lesions | Airborne spores; young trees moved | Remove and burn trees, control imports |
| Malaria | Protist | Damage to blood and liver, fevers | Mosquitoes (an animal vector) | Nets, repellent, no still water for breeding |
| HIV | Virus | Destroys white blood cells, leading to AIDS | Body fluids: sex, shared needles | Condoms, screening, needle exchange, antiretroviral drugs |
| Stomach ulcers | Bacterium (Helicobacter) | Stomach pain, nausea, vomiting | Oral transmission | Clean water, hygiene, antibiotics |
| Ebola | Virus | Haemorrhagic fever | Body fluids | Isolation, protective clothing, safe burials, vaccine |
| Chlamydia | Bacterium | Often none; can cause infertility | Sexual contact | Condoms, screening, antibiotics |
Match the control to the route: water diseases need clean water, airborne ones need isolation and ventilation, vectors need the vector stopped, body fluids need barriers.
The rest of this lesson and its 13 practice questions are in Plus.
Screen 1 of 5, free to read.
- 13 exam-style questions, marked as you go, each with a worked solution
- Anything you get wrong is saved to your flashcards