New study reveals that the stereochemistry of lipid nanoparticles critically influences safety and efficacy in mRNA delivery.

A recent study published in National Science Review has developed a field wastewater pathogen detection technology named WATER NEWS. Through iterative optimization of CRISPR-based assays, this system ​eliminates​ all dependence on cold-chain storage and continuous power supply while preventing nucleic acid aerosol contamination, ​thus establishing​ a sustainable epidemic surveillance paradigm for the post-pandemic era.

Wastewater surveillance at treatment plants offers a low-cost, early warning method for detecting COVID-19. Researchers in Japan conducted an economic evaluation of a system for long-term care facilities that combines wastewater data with clinical testing thresholds to guide timely interventions. Their findings show that this approach could generate significant healthcare savings and improve outbreak response. The study supports wastewater surveillance as a scalable, cost-effective strategy for enhancing pandemic preparedness in vulnerable populations.

Bethesda, MD (July 29, 2025) — A new international study confirmed a significant post-pandemic rise in disorders of gut-brain interaction, including irritable bowel syndrome (IBS) and functional dyspepsia, according to the paper published in Clinical Gastroenterology and Hepatology.

Researchers at Chan Zuckerberg Biohub San Francisco and Stanford University have developed an AI-driven Virtual Lab through which a team of AI agents, each equipped with varied scientific expertise, can tackle sophisticated and open-ended scientific problems by formulating, refining, and carrying out a complex research strategy — these agents can even conduct virtual experiments, producing results that can be validated in real-life laboratories.

A recent study highlights both the promise and limitations of the inhaled COVID-19 vaccine Ad5-XBB.1.5. Researchers found that the vaccine effectively induced strong immunoglobulin A (IgA) responses in the nasal mucosa and bloodstream, with nasal IgA showing a stronger correlation with virus-neutralizing activity than immunoglobulin G (IgG). The vaccine also boosted antigen-specific CD8⁺ T cell responses and slightly increased antibody-dependent cellular phagocytosis (ADCP). However, the study revealed that nasal IgA levels declined significantly by six months post-vaccination, and the majority of participants experienced breakthrough infections during the recent JN.1 wave. Additionally, individuals with high levels of pre-existing antibodies against adenovirus type 5 (Ad5) showed reduced neutralizing responses, indicating that vector immunity may limit the vaccine’s effectiveness. These findings underscore the challenges of achieving long-lasting mucosal immunity through current inhaled vaccine strategies. The researchers call for the development of next-generation mucosal vaccines, that can sustain strong and durable IgA responses in the nasal mucosa, offering better protection against emerging SARS-CoV-2 variants and reducing community transmission.