Indicator

Parameters

Calculation

Transmissibility

syndromic ILI

Number of notified ILI cases*100/Total of outpatients (a)

(a) = Proportion of notified ILI cases

virological ILI

Number of positive ILI cases*100/Total of tested ILI cases (b)

(b) = Positivity rate of ILI cases

Composite ILI or product of syndromic and virological ILI

Proportion of notified ILI cases*Positivity rate of ILI cases {(a)*(b)}