1. Malaria Test Question Study the two maps of Chad. Chad and many other developing countries have been affected by water-related diseases including malaria, cholera and bilharzia/schistosomiasis. Select one of the above diseases. (i) Describe the physical & human factors which put people at risk of contacting the disease. (6) Describe and explain the measures that can be taken to combat the disease. (8) Discuss the effectiveness of the measures taken to combat the disease. (6) (iv) Explain the benefits to a LEDC of controlling the disease. (6)

2. Remember.... Malaria Test Question 26 marks: 30 minutes time limit Revision notes on the OHS website Completed large poster to be presented as well Wednesday Period 2.

3. Malaria Test Question (i) Describe the physical & human factors which put people at risk of contacting the disease. (6) Physical 16 deg C; humid; stagnant water; sheltering vegetation Human high popn densities; irrigation; slums; medically vulnerable Describe and explain the measures that can be taken to combat the disease. (8) LARVAE oil; egg; bti; bombing; fish; trees; draining EDUCATION various forms ADULT DDT spray; Malathion; bednets; genetics; clothes; personal sprays/roll-on; clear vegetation PARASITE prophylactics, before and after; vaccine (iii) Discuss the effectiveness of the measures taken to combat the disease. (6) LARVAE oil; egg; bti (cost); bombing (cheap, cover all?); (all water?, pollution, other life); fish (protein); trees (long term); draining; (all water?); EDUCATION various forms; ADULT DDT spray; (cost and repetition) Malathion (cost, repetition); bednets; (cheap to give out, expensive to buy) genetics;(in process) clothes; personal sprays/roll-on (expensive); clear vegetation (realistic) PARASITE prophylactics, before and after; (plasmodium immunity) vaccine (in process) (L E A P) (iv) Explain the benefits to a LEDC of controlling the disease. (6) Personal education, work, family life, birth rate, subsistence farming Economic medical spend, tourism, lost time, GNP

4. Vibrio cholerae > Cholera A water borne disease: water as the vector

5. Schmallenberg virus

6. Plasmodium> Malaria A blood borne disease: mosquito as the vector Plasmodium falciparum

7. ✗ ✗ ✗ ✓ Malaria Mosquito as vector: ONLY AS ADULT

8. __ __ __ __ __ __ __ __ __ ✗ Virus B a t eri a __ __ __ __ Parasite ✓ A virus is a small infectious agent that can replicate only inside the living cells of an organism. A large range of microorganisms with no true nucleus producing their own food A large range of microorganisms with no true nucleus Plasmodium is a one celled parasite that eats off another organism c ✗