Clinical value of serology for the diagnosis of strongyloidiasis in travelers and migrants: A 4-year retrospective study using the Bordier IVD® Strongyloides ratti ELISA assay

Open Access

Table 1

Criteria used for the classification of cases.

Grade	Description	Status
A	Presence of S. stercoralis larvae in stools	Proven strongyloidiasis
B	S. stercoralis serology index ≥ 1.5 and serologic results for other nematodes (i) negative or (ii) positive with a lower index than that of S. stercoralis serology¹	Probable strongyloidiasis
C	S. stercoralis serology positive but patients not fulfilling grades A or B	Possible strongyloidiasis
D	S. stercoralis serology negative and absence of larvae detection	No strongyloidiasis

Direct comparison of serology indexes is possible only if both techniques have the same positivity threshold.

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