Characterising the Loss of Haemostasis in Haemorrhagic Fever With Renal Syndrome

Two blood samples will be collected at admission for thromboelastography using the TEG 6s platform (Haemonetics®). One sample will be collected in a citrated blood tube for global haemostasis assessment, and one sample will be collected in a heparinised tube for platelet function analysis.

Two blood samples will be collected 3 - 7 days after initial thromboelastography for follow-up analysis using the TEG 6s platform (Haemonetics®). One sample will be collected in a citrated blood tube for global haemostasis assessment, and one sample will be collected in a heparinised tube for platelet function analysis.

One blood sample will be collected at admission for transcriptomic analysis. Blood sample will be collected into a PAXgene® RNA tube and analysed using nanopore sequencing to characterise the viral and host transcriptome.

Routine clinical/demographic/epidemiological data will be collected at admission and throughout hospitalisation. This will relate to clinical presentation (day of illness at presentation, presenting symptoms); demographics and epidemiology (age, gender, site of infection); clinical course during hospitalisation (maximum level of care, dialysis use, blood product use, survival outcome).

Data on routine laboratory parameters will be collected throughout hospitalisation. These will relate to laboratory clotting parameters (platelet count, prothrombin time, activated partial thromboplastin time, fibrinogen, D-dimer); liver function tests (aspartate aminotransferase, alanine aminotransferase); laboratory haematology parameters (haemoglobin, white cell count, blood film); laboratory biochemistry parameters (urea, creatinine); viral load.

A severity score will be assigned to each patient based on clinical and laboratory data at admission according to a pre-defined scoring system.