A Case of Undetected Neuroborreliosis in a 75-Year-Old Chinese Male

Table 2

Serologic results of the patient obtained on initial evaluation during his second admission and again after the patient began to clinically decompensate in the intensive care unit.

Serology	Initial results on readmission to hospital	Repeat results after ICU admission	Normal ranges	Methods applied
Babesia microti IgG	—	1 : 20 (high)	<1 : 10	Immunofluorescence assay
Babesia microti IgM	—	1 : 160 (high)	<1 : 10	Immunofluorescence assay
Lyme screen IgG and IgM	0.89	3.25 (high)	0.00–0.90	ELISA
Lyme disease IgG/IgMs	0.82	3.17 (high)	0.00–0.90	ELISA
Lyme IgM Western blot	—	Positive	Negative	Western blot
West Nile virus IgG	—	Negative	Negative	ELISA
West Nile virus IgM	—	Negative	Negative	ELISA
H. influenza antigen type B	—	Negative	Negative	Latex agglutination
N. meningitidis antigen	—	Negative	Negative	Latex agglutination
S. pneumoniae antigen	—	Negative	Negative	Immunochromatography assay
GrpB Streptococcus antigen	—	Negative	Negative	Latex agglutination
Rheumatoid factor	—	<10.0 (negative)	0–15	Latex immunoturbidimetry
Antinuclear antibody	—	Negative	Negative	Immunofluorescence assay

The only screening test initially performed was Lyme ELISA, which returned negative.