
Keywords: عفونت تنفسی پایین; PCR; polymerase chain reaction; LRTI; lower respiratory infection; GMVL; geometric mean viral load; CSF; cerebrospinal fluid; RSV; respiratory syncytial virus; CRP; C-reactive protein; hMPV; human metapneumovirus; PCT; procalcitonin; WU; KI; Polyomavirus;