Table 2. Percent of stools tested found positive for various heiminth eggs. Positive Trichuris A. Rongelap Atoll, persens = 106) Jun 77 Rx (Jun) Rx (Sep) Jan 78 : Rx (Jan) Sep 78 Sep 79 B. Hookworm Negat‘ve_tesced Jan 78 Rx (Jan) . Sep 78 Sep 79 tested §0.2 38.5 1.0 15.6 96 co 22.7 3.4 4.0 76.1 88 85 20.0 68.7. 4.6 22.7 0.0 0.0 76.9 18.2 65 22 6i 2) persons = 74) Rx (Jun) Rx (Sep) Percent of total eroup 1977-1979, Group aged 2-14 vears (estimated total Rongelap Atoll, 1977-1979, Group aged >15 years (es*iuated Jun 77 C. Ascaris No. otal 62.4 4.4 2.9 34.3 67 90 8.6 0.0 0.0 91.3 58 73 2.3 12.5 2.3 6.2 0.0 0.0 92.8 75.0 42 16 57 72 Utirik Atoll, 1978-1979, Group aged 2-14 years (estimated total persons = 136) Mar 78 Rx (Mar) 100 44.9 0 0 29 21 Sep 78 97.0 23.4 0 1.6 64 46 Sep 79 96.4 18.8 3.7 3.7 53 39 Rx (Sep) Rx “Jan) D. Utirik Atoll, 1978~1979, Group aged >15 years (estimated total persons = 128) Mar 78 83.9 10.8 5.4 16.2 37 29 Sep 78 88.5 11.5 3.8 7.7 26 29 Sep 79 92.4 15.4 0 7.7 26 20 Rx (Mar) Rx (Sep) Rx (Jan) - 39 -