Further reading

Benenson, A.S. (ed.) (1995) Control of Communicable Disease Manual, 16th edn, American Public Health Association, Washington, DC.

Mandel, G.L., Douglas, R.G. and Bennett, J.E. (1989) Prin­ciples and Practice of Infectious Diseases, 3rd edn, Churchill Livingstone, Edinburgh.

Manson-Bahr, P.E.C. (1996) Manson’s Tropical Diseases, 20th edn, WB. Saunders, London.

Shanson, D.C. (1988) Microbiology in Clinical Practice, 2nd edn, Wright, London.