Table. Pathogens for which laboratory tests were performed, yellow fever case, the Netherlands, March 2017.

Pathogen	Blood (day 3 post onset of symptoms)
Plasmodium spp.	Thick smear negative, antigen test negative
Hepatitis A virus	IgM and IgG negative
Hepatitis B virus	Serological screening negative
Hepatitis C virus	Serological screening negative
Hepatitis E virus	PCR negative
Epstein Barr virus	IgM and IgG negative
Cytomegalovirus	IgM and IgG negative
Herpes simplex virus type 1 and 2	PCR negative
Dengue virus	PCR negative, IgM and IgG negative
Chikungunya virus	PCR negative, IgM and IgG negative
Zika virus	PCR negative, IgM and IgG negativea
Leptospira spp.	PCR negative, microscopic agglutination test negative, IgM 1:80b

^a Performed on day 5 post onset of symptoms (dps 5).

^b ELISA (in-house ELISA Dutch Leptospirosis Reference Center) performed on dps 6 showed IgM 1:80 (cut-off positive IgM ≥1:160). IgM results were negative on dps 3 and dps 7 using Leptocheck-WB (Zephyr Biomedicals, Goa, India).