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The US switch in shingles vaccines revealed an unexpected heart health pattern

In a natural experiment involving 72,920 propensity-matched US adults aged 60 years and older, recombinant shingles vaccination was associated with a 9% lower cardiovascular disease burden over seven years compared with the live attenuated vaccine. Lower burdens of ischemic heart disease and heart failure were seen in both sexes, while ischemic stroke was significantly lower only among men, supporting further clinical trials and mechanistic studies

27 Aug 2026

Researchers tested dozens of clues for long COVID. One finding stood out

A nationwide study of 218 people in the Faroe Islands examined clinical, neurological, and blood-based markers associated with persistent symptoms around six months after SARS-CoV-2 infection. Despite extensive testing, researchers found no convincing biomarker for long COVID, while a statistical association with lower INR remained within the normal clinical range and requires replication.

27 Aug 2026

A striking immune cell pattern emerges around a person’s 100th birthday

Single-cell immune profiling found that CD4 cytotoxic T lymphocytes become more abundant around age 100, showing stepwise differentiation and substantial clonal expansion. Ex vivo experiments also revealed cytokine plasticity within individual clones, supporting the hypothesis that these cells adapt to persistent antigens during healthy aging, although their direct role in longevity remains unproven.

23 Aug 2026

Synthetic peptide enables modular detection of coronavirus protease activity

A research team has computationally designed a synthetic peptide that enables modular detection of the enzymatic activity of coronavirus 3C-like protease (3CLPro), an enzyme essential for viral replication and maturation.

13 Aug 2026

Severe COVID-19 reactivates dormant viruses and may leave a lasting viral signature

A longitudinal study of 1,154 hospitalized COVID-19 patients found widespread reactivation of chronic Herpesviridae and Anelloviridae, with distinct viral patterns linked to disease severity, inflammation, and clinical outcomes. Anelloviridae also persisted during convalescence and were associated with physical deficits in long COVID, although the study did not establish causation.

7 Aug 2026

Airplane wastewater pilot shows how airports could track pathogens across borders

Researchers showed that airplane wastewater from a shared US-UK transatlantic route could be collected and analyzed to detect respiratory and enteric pathogen genetic material. The pilot also captured SARS-CoV-2 lineage patterns, including earlier detection of XEC on UK-origin flights, while showing the need for harmonized assays and broader sampling.

4 Aug 2026

Ten-million-person study links semaglutide to lower COVID-19 mortality

Researchers analyzing claims from more than 10.1 million commercial insurance and Medicare Advantage enrollees found that semaglutide use was associated with a 49% lower adjusted hazard of COVID-19-related death. The observational findings corroborate earlier SELECT trial results but do not establish causation, making further prospective research essential.

30 Jul 2026

Study links severe COVID to higher TB risk, and vaccination appears to blunt the link

A nationwide Chilean cohort study of more than 3.6 million adults found that severe COVID-19 requiring hospitalization was associated with more than an eightfold higher hazard of incident tuberculosis within one year. The association was strongest in the first six months and among unvaccinated individuals, although absolute TB incidence remained low.

1 Jul 2026

US study shows updated COVID vaccines cut hospitalization odds by 55%

The 2025-2026 COVID-19 vaccines were associated with 50% estimated effectiveness against COVID-19-associated emergency department and urgent care encounters among immunocompetent US adults. They were also linked to an estimated 55% effectiveness against COVID-19-associated hospitalization, providing added protection beyond existing immunity from prior infection or vaccination.

24 Jun 2026

Study links COVID-19 to higher sleep apnea risk years after infection

Researchers analyzed more than 910,000 adults and found that SARS-CoV-2 infection was associated with a higher adjusted risk of new-onset obstructive sleep apnea up to 4.5 years later. The association appeared in both hospitalized and non-hospitalized COVID-19 patients, supporting targeted screening in higher-risk post-COVID groups while highlighting the need for objective sleep testing.

24 Jun 2026

Remote work explains part of the post-pandemic rise in mental distress

Researchers found that workers in remote jobs spent more time alone after the COVID-19 pandemic and experienced greater psychological distress than those in non-remote jobs. The effects were strongest among people living alone, suggesting that reduced everyday social contact may be an important cost of remote work.

10 Jun 2026

Ensitrelvir cuts household COVID-19 risk when given after exposure

Ensitrelvir, an oral SARS-CoV-2 3C-like protease inhibitor, reduced symptomatic RT-PCR-confirmed COVID-19 among household contacts when given within 72 hours after symptom onset in the infected index patient. In the phase 3 SCORPIO-PEP trial, COVID-19 occurred in 2.9% of ensitrelvir recipients versus 9.0% of placebo recipients, with similar overall adverse-event rates.

20 May 2026

Study reveals hidden airborne infection pathways in multi-family buildings

Airborne diseases like measles, influenza and COVID-19 can easily spread between units in multi-family buildings via a type of bathroom ventilation system commonly used around the world, new research suggests.

13 May 2026

Hantavirus scare on cruise ship prompts WHO response

Hantavirus infections among cruise ship passengers have sparked a global health response, highlighting the need for effective outbreak management strategies.

7 May 2026

Scientists map 239 human-infective RNA viruses to track future outbreak risks

Researchers updated the global catalogue of human-infective RNA viruses to 239 ICTV-recognised species, incorporating taxonomy, discovery dates, locations, genome links, host range, transmissibility, and transmission routes. The dataset shows that most known human-infective RNA viruses remain strictly zoonotic, while only a minority are endemic in humans or capable of epidemic spread.

26 Apr 2026

Long COVID in children doubles risk of poor grades

Findings indicate long-COVID leads to academic and social difficulties in children, highlighting the importance of addressing their unique educational needs.

23 Apr 2026

Study links long COVID in kids to worse grades and attention problems

A large NIH-funded RECOVER-Pediatrics study found that children and adolescents meeting the long COVID research threshold were more likely to have caregiver-reported worsening grades, attention difficulties, reduced enjoyment with friends, and greater IEP involvement than peers below the threshold. The findings suggest that pediatric long COVID may affect school and social functioning during key developmental years, although the cross-sectional design does not establish causation.

20 Apr 2026

Study finds long COVID leaves a distinct immune signature in the blood

Researchers identified a small panel of inflammatory and neurology-related blood proteins that may help distinguish long COVID from recovery or no prior infection, while also showing that booster vaccination did not appear to worsen these protein responses in this cohort. The study also found that immune responses after reinfection differed from those seen after the first SARS-CoV-2 infection, suggesting altered long-term immune behavior in some previously infected individuals.

14 Apr 2026

SARS-CoV-2 rarely reaches first-trimester placentas but still disrupts early pregnancy immunity

Researchers analyzing 761 first-trimester pregnancies found that SARS-CoV-2 was rarely detected in placental tissues, suggesting in utero transmission early in pregnancy is uncommon. However, maternal infection was linked to immune dysregulation at the maternal-fetal interface, altered trophoblast signaling, and inflammatory changes that could affect placental development.

14 Apr 2026

NTU Singapore and partners develop new inhaled treatment for severe lung infections

Nanyang Technological University, Singapore (NTU Singapore) is working with China's Southern University of Science and Technology (SUSTech) and Swedish biotechnology company Lipigon Pharmaceuticals AB to develop a new inhaled treatment aimed at helping patients recover faster from severe lung infections.

13 Apr 2026