Level-3

(Gold standard)

Level-2

(EDS ≥ 0.51)

Level-1

(EDS ≤ 0.50)

Enteric Fever

Culture

High accuracy RDTK,

Widal Slide + Widal Tube

Widal slide OR tube singly

Hepatitis B

ELISA

Hep B RDTK

Not available

Hepatitis A and E

ELISA

Hep A and E rapid kits or combo kit—both tests available in the lab

Not available

Dengue

PCR, ELISA

Both NS1/IgM RDTK

NS1 alone OR

Any non-dual rapid kit