Correction: Meinarovich et al. Diagnosis of Secondary Bacterial Meningitis via Aromatic Metabolites and Biomarkers in Cerebrospinal Fluid. Int. J. Mol. Sci. 2025, 26, 10522

In the original publication [1], there was a mistake in the legend for Table 2. The authors mistakenly reported erroneous reference values for 4-hydroxyphenyllactic acid (p-HPhLA), 5-hydroxyindole-3-acetic acid (5HIAA), indole-3-lactic acid (3ILA), and indole-3-acetic acid (3IAA).

This has now been corrected. We recalculated all concentrations based on the correct formula: Concentration (ng/mL)/Molar mass (g/mol) * 1000 = Concentration (nmol/L). Table 2 has also been updated accordingly. The correct

Table 2. The cellular and biochemical composition and concentrations of biomarkers and aromatic metabolites in cerebrospinal fluid samples from patients with sequelae of severe brain damage with a chronic critical illness (cohort #1) and patients after neurosurgical interventions (cohort #2), and the results of comparative statistical analysis (the Wald test) between various groups of samples (statistically significant differences are highlighted in bold).

Parameter	Reference Values	Cohort #1				Cohort #2				p Cohorts #1 and #2	p 1.1 and 2.1	p 1.2 and 2.2
		All Samples (n = 77)	Group 1.1 with Secondary Meningitis (n = 21)	Group 1.2 Without Secondary Meningitis (n = 56)	p 1.1 and 1.2	All Samples (n = 19)	Group 2.1 with Secondary Meningitis (n = 12)	Group 2.2 Without Secondary Meningitis (n = 7)	p 2.1 and 2.2
Leucocyte count, cells/mm3	2–8	11 (3, 96)	733 (139, 2000)	6 (2, 18)	<0.001	163 (18, 710)	258 (136, 866)	14 (5, 88)	0.21	0.27	0.62	<0.001
Lymphocytes, %	90–95	61 (30, 94)	11 (5, 36)	75 (54, 100)	<0.001	4 (3, 6)	4 (3, 8)	4 (3, 5)	0.55	<0.001	0.08	<0.001
Neutrophils, %	3–5	47 (25, 68)	84 (69, 92)	40 (22, 50)	<0.001	88 (44, 96)	96 (87, 97)	37 (11, 63)	<0.001	<0.001	0.31	0.57
Protein, g/L	0.1–0.3	0.7 (0.5, 1.2)	1.6 (0.6, 4.5)	0.7 (0.5, 1.0)	<0.001	2.6 (1.2, 4.2)	3.6 (2.4, 4.7)	1.2 (0.5, 2.2)	0.06	<0.001	0.36	0.03
Glucose, mmol/L	2.8–3.9	3.1 (2.2, 3.8)	0.6 (0.2, 3.5)	3.2 (2.6, 3.8)	0.12	2.6 (2.2, 3.5)	2.2 (1.9, 2.7)	3.7 (3.3, 4.2)	<0.001	0.42	0.99	0.78
IL-6, pg/mL	1.5 (1.0, 2.2) [23]	71 (10, 897)	3228 (104, 5000)	42 (7, 234)	<0.001	2336 (420, 5000)	4017 (1455, 5000)	271 (144, 3371)	0.19	<0.001	0.46	0.03
NSE, ng/mL	17.3 ± 4.6 [24]	1.6 (0.9, 3.2)	2.0 (1.3, 9.3)	1.3 (0.7, 2.9)	0.06	12.1 (5.0, 37.2)	20.5 (9.0, 35.7)	5.0 (3.3, 64.7)	0.7	0.14	0.4	<0.001
S100, μg/L	1.4 ± 0.5 [25]	0.8 (0.4, 3.3)	3.7 (0.7, 18.0)	0.6 (0.3, 1.2)	<0.001	6.5 (2.5, 23.1)	5.5 (2.3, 26.0)	9.2 (3.2, 19.6)	0.98	<0.001	0.7	<0.001
p-HPhLA, nmol/L	237 (196, 319) [26]	633 (370, 1246)	2750 (1734, 4206)	491 (281, 840)	<0.001	925 (533, 1485)	1172 (861, 1726)	522 (424, 725)	0.46	0.7	0.03	0.1
p-HBA, nmol/L	no data	33 (23, 61)	35 (23, 99)	32 (22, 60)	0.26	30 (17, 41)	22 (14, 36)	35 (33, 41)	0.38	0.32	0.31	0.7
p-HPhAA, nmol/L	no data	223 (101, 469)	906 (362, 3167)	152 (77, 278)	0.03	100 (60, 191)	92 (66, 233)	103 (60, 138)	0.7	0.46	0.32	0.79
PhLA, nmol/L	no data	67 (43, 173)	538 (361, 736)	52 (36, 77)	<0.001	100 (59, 131)	108 (94, 145)	47 (35, 68)	0.26	0.57	0.16	0.43
5HIAA, nmol/L	71 (55, 102) [26]	112 (22, 224)	162 (85, 306)	72 (<20, 212)	0.35	122 (81, 204)	143 (103, 215)	72 (62, 146)	0.91	0.87	0.77	0.93
3ILA, nmol/L	9 (7–12) [26]	11 (4, 27)	202 (22, 472)	5 (3, 15)	<0.001	25 (18, 85)	60 (25, 93)	10 (6, 18)	0.39	0.95	0.26	0.03
3ICA, nmol/L	no data	11 (6, 14)	12 (11, 20)	8 (6, 13)	0.03	8 (6, 10)	8 (7, 11)	5 (4, 9)	0.7	0.47	0.17	0.38
3IAA, nmol/L	20 (14–32) [26]	39 (22, 79)	96 (47, 204)	26 (18, 44)	0.12	71 (43, 118)	73 (65, 88)	47 (35, 177)	0.47	0.14	0.6	0.03
3IPA, nmol/L	0.11 ± 0.02 [10]	<2 (<2, 4)	2 (<2, 4)	<2 (<2, 4)	<0.001	9 (3, 15)	9 (4, 16)	2 (<2, 14)	0.56	0.27	0.88	<0.001

appears below.

Also, there was an error in the original publication [1] in Section 2. Results and Discussion, 2.2. Description of Cerebrospinal Fluid Samples from Cohorts #1 and #2, Paragraph Number 8. This has now been corrected. The correct paragraph appears below.

Concentrations of p-HPhLA in patients of all groups generally exceeded the normal values indicated in [26]. Concentrations of 5HIAA and 3ILA in patients without meningitis in groups 1.2 and 2.2 were generally comparable with the norm indicated in [26]. In both groups with meningitis, concentrations exceeding these values are observed. In the case of 3IAA in group 1.2, concentrations comparable to the normal values in [26] were observed.

The authors state that the scientific conclusions are unaffected. This correction was approved by the Academic Editor. The original publication has also been updated.