Clinical Study of EBV-TCR-T Cells for EBV-associated Hemophagocytic Lymphohistiocytosis or EBV Infection

Inclusion Criteria: * Age 1-60 years, gender unlimited. * Diagnosed with EBV associated-hemophagocytic lymphohistiocytosis (HLH) or EBV infection. * Fully understood and informed the study and signed the ICF. * Karnofsky Score ≥ 70(age ≥16y) or Lansky Score ≥ 50(age\<16y). * TCRT-T cell donor inclusion criteria: 1)Age \>=8 years, gender unlimited; 2) Understand and voluntarily sign informed consent and are willing to comply with laboratory tests and other research procedures; 3) ≥ 3/6 HLA match with TCR-T cell recipients enrolled; 4) Lymphocyte count = (0.8\~4) × 10\^9/L; 5) Have sufficient venous circulation, without any symptoms that do not allow blood cell isolation. Exclusion Criteria: * Patients with uncontrolled active aGVHD one day before TCR-T cell infusion. * Patients with severe kidney disease (Cr \> 3×normal value), liver damage (TBIL \>2.5×upper limit of normal value, ALT and AST \> 3×upper limit of normal value) or heart failure (NYHA heart function grade IV or left ventricular ejection fraction\<50%) one week before TCR-T cell infusion. * Anticipated to take immunosuppressive hormones on the day of TCR-T cell infusion. * Use of immunosuppressive drugs or G-CSF within 2 weeks before PBMC blood collection. * Have tumours, active and uncontrolled malignant diseases. * Serologically positive for HIV-Ab or TAP-ab. * Pregnant or lactating women. * Men and their partners or women of childbearing potential refused contraception during the study period. * Anticipated to have other cell therapies in 4 week post TCR-T cell infusion. * Participated in any other clinical study of drugs and medical devices before 4 weeks of enrollment. * Allergy to albumin. * TCRT-T cell donor exclusion criteria: 1) pregnant woman; 2) Serologically positive for HBsAg, HCV-Ab, HIV-Ab or TAP-ab; 3) EBV-DNA or CMV-DNA positive; 4) other uncontrolled infection; 5) Use of immunosuppressive drugs or G-CSF within 2 weeks before PBMC blood collection.