Fig. 2.

Prospective study. ELISA IgM results in acute and convalescent sampling for Hantaan virus (HTNV) in eight cases of seroconfirmed (ELISA IgM positive) leptospirosis and one leptospirosis-negative case (case 7). Results are expressed as Q values (observed OD/control cut-off OD), where Q values ⩾2 (- - - -) are considered as positives. Case 1 (red line) is confirmed as hantavirus-negative, whereas case 9 (◊) and case 6 (○) are confirmed as PUUV-positive. Case 2 (■) and case 5 (*) are confirmed as borderline HTNV-positive, and consequently as only PUUV positive.