Table 2 Inclusion and exclusion criteria

Inclusion criteria

 Listed in PubMed, Embase database, WHO or PAHO databases

 Published before 31st December 2013

 Conducted in human subjects

 Published in English language

 Collected blood and bone marrow samples from same patients for S. Typhi detection

 Identified by search terms defined in the text

 Study design: Laboratory surveillance

Exclusion criteria

 Papers that do not distinguish S. Typhi from S. Paratyphi in blood culture results