Correction to: Long-term persistence of serum IgM antibodies against chikungunya virus in patients with chronic arthralgia (Virology Journal, (2025), 22, 1, (115), 10.1186/s12985-025-02721-x)

In Table 1 of this article [1], the values in the footnotes a, c, and d were incorrect and their values were updated. (Table presented.) Demographic, clinical and laboratory features of laboratory-confirmed chikungunya patients Characteristics Days post symptoms onset (DPSO) at the time of the visit 0–7 (N = 45) 10–30 (N = 40) 31–60 (N = 13) 61–90 (N = 7) 91–120 (N = 2) 121–720 (N = 8) 721–900 (N = 17) 901–1080 (N = 8) 1,081–1,260 (N = 3) > 1,260 (N = 2) Sex (female) 33 (73) 30 (75) 11 (84) 4 (57) 1 (50) 7 (87) 12 (70) 6 (75) 2 (66) 1 (50) Age 44 (35–56) 45 (35–56) 37 (30–49) 56 (47–52) 38 (33–44) 54 (40–68) 44 (33–52) 40 (33–48) 37 (21–55) 44 (33–56) DPSO 1 (1.5–3) 15 (13–20) 36 (37–44) 74 (67–78) 102 (96 −107) 166 (147–271) 848 (806–860) 1008 (959–1,022) 1,120 (1,120–1172,5) 1,301.5 (1,294–1308,8) Arthralgia 45 (100) 35 (94) ^a 12 (92) 7 (100) 2 (100) 7 (87) 17 (100) 8 (100) 3 (100) 2 (100) Myalgia 45 (100) 0 (0) ^b 8 (80) ^d 6 (85) 0 (0) 4 (50) 13 (76) 5 (62) 2 (66) 1 (50) Joint edema 31 (68) 27 (75) ^c 12 (100) ^e 7 (100) 2 (100) 5 (62) 12 (75) 7 (87) 2 (66) 2 (100) RT-qPCR CHIKV positive 43 (95) 5 (2) 0 (0) 0 (0) 0 (0) 0 (0) 0 (0) 0 (0) 0 (0) 0 (0) Cycle Threshold 22.82 (20.0–28.4) 36.75 (35.6–37.9) - - - - - - - - ELISA IgM positive ^f,h 6 (13) 40 (100) 13 (100) 7 (100) 2 (100) 5 (62) 6 (35) 1 (12) 1 (33) 1 (50) ELISA IgG positive ^g,h 1 (2) 40 (100) 13 (100) 7 (100) 2 (100) 8 (100) 17 (100) 8 (100) 3 (100) 2 (100) ^aData available for 37 patients ^bData available for 2 patients ^cData available for 36 patients ^dData available for 10 patients ^eData available for 12 patients ^fResults based on the sample-to-calibrator optical density ratio for the IgM ELISA are interpreted as follows: Negative < 0.9; Positive > 1.1; Indeterminate ≥ 0.9 and ≤ 1.1 ^gResults based on sample-to-calibrator optical density ratio for the IgG ELISA are interpreted as follows: Negative < 0.8; Positive ≥ 1.1; Indeterminate ≥ 0.8 and < 1.1 ^hThe Sample/Calibrator ratio is calculated by dividing the optical density obtained with the test sample by the calibrator value, which is unique for the IgG ELISA and an average of a duplicate calibrator for the IgM ELISA Incorrect footnotes: ^aData available for 35 patients ^cData available for 27 patients ^dData available for 8 patients Correct Footnote should read: ^aData available for 37 patients ^cData available for 36 patients ^dData available for 10 patients The original article has been corrected.