“…Of the 217 CSF samples in which mNGS investigation yielded results discordant with the routine method, mNGS conclusively found a pathogen in 38/103 CSF samples in which routine investigations found no pathogen, as reported in 25/51 studies: mNGS over-detected RNA viruses, including Human rhinovirus and Human coronavirus ( Li et al, 2021 ), Coxsackievirus 9 and Mumps virus ( Kawada et al, 2016 ), Saint-Louis Encephalitis virus ( Chiu et al, 2017 ), Powassan Virus ( Piantadosi et al, 2018 ), Toscana virus ( Tschumi et al, 2019 ), Jamestown Canyon virus ( Solomon et al, 2021 ), Enterovirus A71 ( Leon et al, 2020 ), and Hepatitis E virus ( Carbo et al, 2020 ), while only HSV-1, HHV-6, and EBV were identified as DNA viruses ( Zhang Y. et al, 2019 ; Carbo et al, 2020 ). Bacterial pathogens documented in 11% of these cases included Listeria monocytogenes in four cases ( Yao et al, 2016 ; Lan et al, 2020 ), Ureaplasma parvum in three cases ( Wang et al, 2020 ; Xing X.-W. et al, 2021 ; Zhan et al, 2021 ) and one case each was detected of Klebsiella pneumoniae ( Zeng et al, 2021 ), Pasteurella multocida ( Morsli et al, 2022 ), Enterococcus faecalis ( Zhang et al, 2021a ), Nocardia farcinica ( Zhang et al, 2021b ), Streptococcus suis ( Zhang et al, 2020 ), and Psychrobacter sp. ( Joanna María et al, 2016 ).…”