{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,31]],"date-time":"2026-08-31T14:55:30Z","timestamp":1788188130986,"version":"build-2803163510"},"reference-count":28,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2025,6,9]],"date-time":"2025-06-09T00:00:00Z","timestamp":1749427200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Transfusion Medicine"],"published-print":{"date-parts":[[2025,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>During the COVID\u201019 pandemic, blood banks faced the risk of shortages of blood components and adopted measures to mitigate this threat. The present study aims to describe the influence of the pandemic on a large hemotherapy centre, including data from 21 regional blood centres (Hemominas\u2010Minas Gerais\/Brazil).<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Time series for the blood donor attendance were constructed covering 8\u2009years (2016\u20132023). Blood centre performance indicators from the pandemic period (2020\u20132023) were compared with the pre\u2010pandemic period (2016\u20132019).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>During the pandemic, a 11.6% decline in the production of blood components was observed (Semiannual average of 355\u2009511 vs. 402\u2009528\u2009units). The first half of 2022 was the period with the highest number of COVID\u201019 cases (third wave) and the lowest production. The drop in the number of candidates for blood donation was more pronounced in the most populated cities. An increase in returning donors was observed, as well as a decrease in the deferral rate. The time series analysis indicated a strong downward trend in blood donors during the pandemic period but with a tendency to recover from the second half of 2023.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The COVID\u201019 pandemic significantly affected the hemotherapy system in Minas Gerais, resulting in a drop in the production of blood components. The operation of Hemominas as a network of blood centers contributed to mitigating the effects of the pandemic, alleviating the scarcity of blood components, especially in the most populated cities, where blood donation was very affected and where the largest and most complex hospitals are located.<\/jats:p><\/jats:sec>","DOI":"10.1111\/tme.13152","type":"journal-article","created":{"date-parts":[[2025,6,9]],"date-time":"2025-06-09T07:54:55Z","timestamp":1749455695000},"page":"312-321","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Performance of a large Brazilian network of blood banks during the <scp>COVID<\/scp>\u201019 pandemic: Impact assessment and time series analysis (2016\u20132023)"],"prefix":"10.1111","volume":"35","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5284-6425","authenticated-orcid":false,"given":"Maria Clara F.","family":"Silva\u2010Malta","sequence":"first","affiliation":[{"name":"Servi\u00e7o de Pesquisa Funda\u00e7\u00e3o Hemominas  Belo Horizonte Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elias M.","family":"Oliveira","sequence":"additional","affiliation":[{"name":"Faculdade de Medicina Universidade Federal de Minas Gerais  Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fabiana C. C.","family":"Piassi","sequence":"additional","affiliation":[{"name":"Administra\u00e7\u00e3o Central Funda\u00e7\u00e3o Hemominas  Belo Horizonte Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maisa A.","family":"Ribeiro","sequence":"additional","affiliation":[{"name":"Administra\u00e7\u00e3o Central Funda\u00e7\u00e3o Hemominas  Belo Horizonte Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"K\u00e1tia C.","family":"Coelho","sequence":"additional","affiliation":[{"name":"Administra\u00e7\u00e3o Central Funda\u00e7\u00e3o Hemominas  Belo Horizonte Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3062-2954","authenticated-orcid":false,"given":"Daniela O. W.","family":"Rodrigues","sequence":"additional","affiliation":[{"name":"Hemocentro Regional de Juiz de Fora Funda\u00e7\u00e3o Hemominas  Belo Horizonte Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ricardo V. F.","family":"Carvalho","sequence":"additional","affiliation":[{"name":"Administra\u00e7\u00e3o Central Funda\u00e7\u00e3o Hemominas  Belo Horizonte Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Junia G. M.","family":"Cioffi","sequence":"additional","affiliation":[{"name":"Administra\u00e7\u00e3o Central Funda\u00e7\u00e3o Hemominas  Belo Horizonte Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marina L.","family":"Martins","sequence":"additional","affiliation":[{"name":"Servi\u00e7o de Pesquisa Funda\u00e7\u00e3o Hemominas  Belo Horizonte Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2025,6,9]]},"reference":[{"key":"e_1_2_10_2_1","unstructured":"WHO.Statement on the fifteenth meeting of the IHR (2005) Emergency Committee on the COVID\u201019 pandemic.2023Accessed October 10 2023.https:\/\/www.who.int\/news\/item\/05\u201005\u20102023\u2010statement\u2010on\u2010the\u2010fifteenth\u2010meeting\u2010of\u2010the\u2010international\u2010health\u2010regulations\u2010(2005)\u2010emergency\u2010committee\u2010regarding\u2010the\u2010coronavirus\u2010disease\u2010(COVID\u201019)\u2010pandemic?gclid=EAIaIQobChMIhu6Vnr7hgQMV0DjUAR2nQwXdEAAYASABEgIaEPD_BwE"},{"key":"e_1_2_10_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.hsr.2023.100087"},{"key":"e_1_2_10_4_1","doi-asserted-by":"publisher","DOI":"10.1111\/tme.13020"},{"key":"e_1_2_10_5_1","doi-asserted-by":"publisher","DOI":"10.1111\/trf.17359"},{"key":"e_1_2_10_6_1","unstructured":"MathieuE RitchieH Rod\u00e9s\u2010GuiraoL et al.Coronavirus Pandemic (COVID\u201019).2020Published online at OurWorldInData.org. 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