Table 1 System of scoring using the Modified Faine’s Criteria (with amendment) 2012 for the diagnosis of leptospirosis [10]

Part A: Clinical data

Score

 Headache

2

 Fever

2

 Fever >39 °C

2

 Conjunctival suffusion

4

 Meningism

4

 Myalgia

4

 Conjuctival suffusion + Meningism + Myalgia

10

 Jaundice

1

 Albuminuria / Nitrogen retention

2

 Haemoptysis/ dyspnoea

2

Part B: Epidemiological factors

Score

 Rainfall

5

 Contact with contaminated environment

4

 Animal contact

1

Part C: Bacteriological and Laboratory Findings

Score

 Isolation of leptospira in culture – Diagnosis certain

 PCR^a

25

Positive serology

 ELISA^b IgM positive^f

15

 SAT^c positive^f

15

 Other rapid tests^df

15

 MAT^e – single positive in high titer^f

15

 MAT^e – Rising titer / seroconversion (paired sera)

25

Presumptive diagnosis of leptospirosis is made of:

 Part A or Part A & Part B score : 26 or more

 Part A, B, C (Total) : 25 or more

 A score between 20 and 25 suggests leptospirosis as a possible diagnosis.