Based on UK COVID Symptom Study Biobank data collected in the early years of the pandemic, experts from King’s College London and Flinders University in Australia have carried out one of the first large-scale longitudinal studies to assess the extent of residual or continuing sleep and related mental health problems, including people with 'long COVID'

A new study in the American Journal of Public Health shows that proposed bills aiming to reduce vaccine access, weaken vaccination requirements, and increase vaccine exemptions increased dramatically in state legislatures from 2021-2023, at times exceeding the number of bills seeking to strengthen vaccine access and mandates. At least 40 percent of bills introduced in each full legislative cycle after the start of the pandemic have been antivaccine-related. Republican lawmakers sponsored 86 percent of the antivaccine bills introduced during this period. Democratic lawmakers introduced 54 percent of provaccine bills, which are bills that supported an increase in access to, or funding and promotion of, vaccines across state legislatures. 

Smaller doses of COVID-19 booster vaccines can provide long-lasting immunity, helping to reduce costs and improve access to vaccination, according to new research. And the findings could also inform vaccine dosing and options during future pandemics.

 A German analysis explores what underlies shifts in the timing of seasonal surges of respiratory diseases, as well as shifts in surges of heart-related deaths, that occurred after the COVID-19 pandemic began. Michael Sieber and Arne Traulsen of the Max Planck Institute for Evolutionary Biology, Germany, present these findings in the open-access journal PLOS Global Public Health on July 15, 2026.

Schoolchildren in Hong Kong face intense academic demands, with long hours of sedentary study leaving little time for movement. On average, their physical activity falls short of the World Health Organization’s recommendation of at least 60 minutes of moderate-to-vigorous physical activity (MVPA) per day.  

A research team at The Education University of Hong Kong (EdUHK) has addressed this challenge by designing exercise videos and coaching materials in the aftermath of the COVID-19 pandemic. Tracking 119 primary school students and their guardians over two years, the study examined how different forms of guidance and interaction influence children’s motivation to exercise. 

Findings revealed that home-based exercise videos boosted MVPA in the short term (by around 6–7 minutes), while parent support strategies grounded in Self-Determination Theory—such as offering choices, giving positive feedback, and encouraging parent-child interaction—helped sustain motivation and meet psychological needs.  

A new brain imaging study led by researchers at the Centre for Addiction and Mental Health (CAMH), published in eBioMedicine, provides the strongest evidence to date that long COVID is associated with injury to dopamine-releasing neurons in the brain—a finding that may explain symptoms such as lack of motivation due to fatigue, slowed movement, and memory difficulties, and could open the door to new treatment strategies.

To prevent viruses from sickening or killing us — whether it’s an individual case of hepatitis B or a COVID pandemic — it’s crucial to understand how the proteins they make initiate changes in our bodies that allow them to flourish.

A new tool has just vastly broadened the scale at which researchers can study these proteins, promising to speed basic discoveries in virology, inform the development of new vaccines and treatments, and help humanity protect against emerging pathogens.