Figure 2

Time kinetic study of various PCR assays using severe fever with thrombocytopenia syndrome (SFTS) patient samples after symptom onset day. Single-round PCR-M = reverse transcription (RT) polymerase chain reaction (PCR) targeting the M segment of the SFTS virus. NPCR-M = RT-nested PCR targeting the M-segment of the SFTS virus. NPCR-S = RT-nested PCR targeting the S-segment of the SFTS virus. QPCR-S = Real-time RT-PCR targeting the S-segment of the SFTS virus.