Alsace was particularly and early on affected by SARS-CoV-2 and quickly implemented a reduction in scheduled admissions and non-urgent surgical interventions, making it possible to reduce requests for labile blood products linked to non-urgent surgical procedures. as has been reported in the literature; the population containment measures also led to a major reduction in traffic - and consequently accidents on the public roads. At the same time, other demands for blood products related to activities such as onco-hematology were little affected. Finally, the blood banks have adapted their collection procedure.

To answer these questions, we propose to conduct a retrospective study over two parallel periods of 2019 and 2020 of the consumption of blood products on the one hand and the availability of stocks on the other hand.

Inclusion criteria:

• Adults patient (≥18 years old)
• Patients admitted to Strasbourg University Hospitals for suspicion of Covid-19, between February 24 and May 31 of 2019 and 2020
• Labile blood products consumed between February 24 and May 31 of 2019 and 2020
• Subjects not having his opposition, after information, to the reuse of his data for the purposes of this research.

Non-inclusion criteria:

• Patients who expressed opposition to participating in the study
• Patients under legal protection
• Patients under guardianship or curatorship

Adult patients (≥18 years old) admitted to Strasbourg University Hospitals for suspicion of Covid-19, between February 24 and May 31 of 2019 and 2020