gelatin particle indirect agglutination test for mass examination for strongyloidiasis an indirect agglutination test using recently developed gelatin particles was assessed to determine its applicability as a screening test for mass examination for strongyloidiasis 1199 individuals in sashiki town okinawa island were screened by the test and 347 were determined to be antibody positive followup examination of the persons whose sera showed positive antibody responses demonstrated the presence of faecal larvae in 417 the calculated infection rate 145 was similar 141 to that indicated by another survey using the microenzymelinked immunosorbent assay microelisa conducted simultaneously among the inhabitants the indirect agglutination test was simple to perform in a short time and without specialized equipment additionally the gelatin particles have many advantages as an antigen carrier eg in handling reading of the resulting pattern and stable longterm preservation the test was considered to be more convenient than the microelisa for mass screening for strongyloidiasis