Rapid expansion of genotype D1.1 A(H5N1) influenza viruses in wild birds across North America during the 2024 migratory season

Nature Medicine, Published online: 15 April 2026; doi:10.1038/s41591-026-04300-1

Using active and passive genomic surveillance, researchers observed the rapid spread of high pathogenicity avian influenza H5N1 D1.1 viruses in wild birds during the 2024 migratory season, which coincided with detection in humans, but did not identify mammalian adaptive markers in viruses from wild birds.

Amyloid-β-driven glymphatic dysfunction in Alzheimer’s disease model mice is driven by Ca2+-mediated increases in astrocytic cholesterol

Nature Neuroscience, Published online: 15 April 2026; doi:10.1038/s41593-026-02261-9

This study uncovers how amyloid-β boosts astrocyte calcium activity, increasing cholesterol and disrupting brain waste clearance in an Alzheimer’s disease mouse model. Targeting astrocyte calcium or cholesterol restores clearance and improves cognition.

<![CDATA[How clinicians choose TRD treatments: patient preference, esketamine vs brain stimulation, and fast-acting glutamate options that improve function.]]>
<![CDATA[Experts explain which narcolepsy meds suit kids—oxybates and pitolisant approvals, stimulant side effects, and key heart-safety checks.]]>
<![CDATA[Learn how DEA scheduling shapes narcolepsy treatment choices, and why emerging orexin agonists may transform daytime sleepiness and cataplexy care.]]>