Low interleukin-10 level indicates a good prognosis in Salmonella enterica serovar typhimurium-induced pediatric hemophagocytic lymphohistiocytosis: A case report

Table 2 Results of laboratory examinations after admission

Testing date	Laboratory examination items	Results
September 26, 2022	Nucleic acid detection of 13 pathogens from nasopharyngeal swab	Human Rhino Virus and Mycoplasma Pneumoniae were positive, and others were all negative
September 26, 2022	T-cell spot of tuberculosis assay	Negative
September 26, 2022	EBV antibodies	EBVCA-IgM was 1.26 U/mL, EBVCA-IgG was 10.9 U/mL, EBNA-IgG was more than 600 U/mL, EBEA-IgG was negative, and EBEA-IgM was 0.06 COI
September 26, 2022	EBV-DNA	0 copies/mL
September 28, 2022	Blood culture	S. typhimurium was positive
September 30, 2022	Widal test	FDSO, FDSH, FDSA, FDSB, and FDSC were all less than 1:40
October 1, 2022	Stool culture	Negative
October 1, 2022	Cerebrospinal fluid culture	Negative
October 4, 2022	Blood culture for the second time	Negative
October 7, 2022	Urine culture	Negative
October 7, 2022	Sputum culture	Negative
October 11, 2022	Bone marrow culture	Negative
October 17, 2022	Widal test for the second time	FDSO and FDSH were both 1:40, while FDSA, FDSB, and FDSC were less than 1:40

COI: Cut-off index; EBEA: EBV early antigen; EBNA: EBV nuclear antigen; EBV: Epstein-Barr virus; EBVCA: EBV viral capsid antigen; FDSB: Antigen of Salmonella paratyphi B; FDSC: Antigen of Salmonella paratyphi C; FDSO: O-antigen of S. typhimurium; FDSH: H-antigen of S. typhimurium; FDSA: Antigen of Salmonella paratyphi A; IgG: Immunoglobulin G; IgM: Immunoglobulin M.