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The sequence of chronic conditions before COVID-19 infection—rather than any single condition—may best predict the development of persistent symptoms, a study of Catalonians in northeastern Spain reveals. (Van Beusekom, 11/5)

Rare vascular and inflammatory conditions such as blood clots, myocarditis, and pericarditis occur more often in children after COVID-19 infection than after vaccination against the disease, UK researchers suggest in a study published in The Lancet Child & Adolescent Health. The largest of its kind, the study analyzed linked electronic health records for nearly all (13.9 million) children in England. (Van Beusekom, 11/5)

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Urinary albumin-creatinine ratio (UACR) may be slightly better than urinary protein-creatinine ratio (UPCR) at predicting kidney failure-related clinical outcomes in chronic kidney disease (CKD), a patient-level meta-analysis suggested. (Monaco, 11/3)

The study of nearly 350,000 adults who were administered surgical antibiotic prophylaxis (SAP) before undergoing a major surgical procedure found that use of non–beta lactam antibiotics was associated with a nearly twofold increase in the surgical-site infection (SSI) rate compared with those who received SAP with beta-lactam antibiotics. (Dall, 11/3)