Nature Medicine, Published online: 03 April 2026; doi:10.1038/s41591-026-04256-2Whole-genome phylogenetic analyses have identified a case of monkeypox virus clade IIb lineage in the Republic of the Congo and co-circulation of three clade lineages, emphasizing the importance of improved surveillance given the risk of possible recombination events in the future.

Nature Medicine, Published online: 03 April 2026; doi:10.1038/s41591-026-04302-zExposome analyses across 34 countries showed that social exposures were associated with faster functional brain aging and physical exposures with faster structural brain aging.

Nature Medicine, Published online: 03 April 2026; doi:10.1038/s41591-026-04305-wTo accelerate therapeutic development and equip stakeholders with clear benchmarks, the authors outline target product profiles for therapies designed to delay or prevent the onset of clinical symptoms of Alzheimer’s disease.

Nature Medicine, Published online: 02 April 2026; doi:10.1038/s41591-026-04281-1A prespecified analysis from the SELECT trial showed that semaglutide reduces major adverse cardiovascular events by 20% compared with placebo, particularly in patients at high risk of fibrosis, as indicated by the Fibrosis-4 index.