Table I.

Aetiological diagnosis in patients presenting with acute febrile illness (n=480)

Diagnostic category	n (%)
Aetiological cause evident	286 (59.6)
Infection	278*
Evident focus of infection without bacteraemia†	151 (31.5)
Bacteraemia	53 (11.0)
Leptospirosis	23 (4.8)
Scrub typhus	22 (4.6)
Dengue	14 (2.9)
Malaria	12 (2.5)
Other causes (non-infectious)	8 (1.7)
Undiagnosed	194 (40.4)

^*275 patients had single infection as aetiological cause; 3 patients had leptospirosis+scrub typhus co-infection; ^†Described in Table II