Three thinkers were central to the inclusion of entrepreneurs: Joseph Schumpeter, Frank Knight, and Israel Kirzner. Schumpeter suggested that entrepreneursnot just companieswere responsible for the creation of new things in the search for profit. Knight focused on entrepreneurs as the bearers of uncertainty and believed they were responsible for risk premiums infinancial markets. Kirzner thought of entrepreneurship as a process that led to the discovery.

21 What is the correct method of diagnosis of meningococcal septicaemia: cerebrospinal fluid culture or blood culture?

22 Can Escherichia coli 0157 be spread by foods other than meats?

23 I have a question about a patient with brucellosis in whom, after 6 weeks of treatment with 600 mg rifampicin +200 mg doxycycline, the agglutination test still shows a 1/320 titre. If, after stopping the treatment, the patient begins to experience identical symptoms as previously, how should treatment proceed? What is the best laboratory test to show relapse?

24 Do steroids have a role in the treatment of dengue haemorrhagic fever, in particular to prevent the further fall in the platelet count?

25 Please give me the mechanism of thrombocytopenia in dengue and malaria.

26 What is the recommended procedure for the treatment of a case of dengue fever?

27 What diseases can you get from tick bites?

28 Why has severe acute respiratory syndrome (SARS) not spread as widely as was predicted?

29 Please explain the relation between recurrent typhoid fever and chronic carrier, and the recommended treatment for both.

30 What is the single most confirmatory diagnostic test for typhoid?