5. (a) State one contribution each of the following pioneers in Health Science:
(i) Sir Alexander fleming;
(ii) Williams Harvey;
(iii) Sir Ronald Ross;
(iv) Sir Louis Pasteur;
(v) Edward Jenner. [ 5 marks]
(b)(i) Draw the life cycle ofthe parasite that causes bilharzias [ 5 marks]
(ii) Mention two symptoms of bilharzias [ 2 marks]
(iii) State five ways of controlling the incidence of bilharzias [ 5 marks]
(c) State three ways of controlling leprosy [ 3 marks]