The Daily Trickle

Preprint reports vaccine boost matured HIV-1 antibodies in a human trial

A preprint, not yet reviewed by other scientists, reports results from the IAVI C107/C110 single-arm, open-label trial in humans, a trial of a vaccine against HIV-1 (human immunodeficiency virus type 1). The authors say a boost with a second vaccine reactivated primed immune cells, which matured into three antibodies that neutralized 18% to 31% of 119 viruses in a globally diverse panel. The antibodies were tested in the laboratory.

Published

Oct 26, 2026

Preprint links a midlife blood protein signature to later Alzheimer's susceptibility

A preprint, not yet reviewed by other scientists, uses brain imaging and plasma proteomics in UK Biobank participants to identify circulating proteins linked to brain structure, which it calls a 'neurostructural proteome'. The authors say this signature predicted later cognitive decline, dementia and Alzheimer's pathology across independent cohorts followed for up to two decades.

Published

Oct 26, 2026

Preprint tests smartphone photos and AI to detect anemia in rural India

A preprint, not yet reviewed by other scientists, reports a cross-sectional study of 5,176 patients at a rural hospital in Gujarat, India. It tested a deep learning model that uses smartphone images of the conjunctiva (the inner eyelid lining) and clinical data to estimate hemoglobin (Hb) without a blood test. The authors report that it caught 90% of severe anemia cases in testing, compared with 70% for any anemia, and say further validation is needed before community use.

Published

Oct 26, 2026

Preprint recovers Helicobacter pylori genomes directly from stomach biopsies

A preprint, not yet reviewed by other scientists, describes uHp-seq, a method that reconstructs the genomes of Helicobacter pylori, a bacterium that infects the stomach, directly from gastric biopsies without culturing it. The authors report that one person can carry several strains at once, and that resistance-linked variants for six commonly used antibiotics were identified more accurately than by commercial testing panels. They say the approach can give resistance profiles from minimally invasive stomach samples without endoscopy.

Published

Oct 26, 2026

Preprint links natural killer immune cells to depression risk in genetic analysis

A preprint, not yet reviewed by other scientists, combines single-cell immune data with population genetics to study major depressive disorder (MDD), using psoriasis as a comparison. The authors report that genetic risk for depression was concentrated in natural killer (NK) cells, while psoriasis risk was concentrated in activated lymphocytes. They suggest NK cell signalling could be a target for immune-based treatments.

Published

Oct 26, 2026

Preprint says vaccination shifts measles persistence from local to regional spread

A preprint, not yet reviewed by other scientists, uses a metapopulation model and incidence data from the USA and Nigeria to study how measles persists. The authors say that as vaccination reduces local infections, colonization and extinction events between connected areas dominate, and cases spread more evenly through the year. They propose a new measure called 'roundness', which in Nigeria was correlated with vaccine coverage (Pearson's r of 0.70).

Published

Oct 26, 2026

Proposed rule would change Exchange eligibility checks under the Working Families Tax Cut

This is a proposed rule, not a final one. It would implement new requirements under the Working Families Tax Cut (WFTC) legislation for Exchange eligibility and verification, and update inconsistency periods, annual and in-year eligibility redeterminations, enrollment methods during verification, and coverage effective dates. The abstract does not say who would be affected beyond these areas.

Published

Oct 27, 2026

Comments close

Nov 27, 2026

How to weigh in: Comment by November 27, 2026.

Preprint models how cheap AI writing could shrink verification of research papers

A preprint, not yet reviewed by other scientists, builds a theoretical model in which artificial intelligence (AI) lowers the cost of writing papers faster than the cost of reading them. The authors argue that as writing gets cheaper, fewer papers are verified, and that AI summaries of the literature inherit the AI's errors once too many papers are written with the same AI.

Published

Oct 26, 2026

Preprint simulates China's delayed retirement reform lowering fertility

A preprint, not yet reviewed by other scientists, models how China's gradual delayed-retirement reform, which began in 2025, affects older workers, transfers to adult children and fertility. Its simulations show the reform raises older employment and money transfers, but reduces grandparental childcare, so fertility and older adults' welfare would decline. The authors say childcare subsidies could offset those declines.

Published

Oct 26, 2026

Preprint models how ads and subscriptions could shape large language model pricing

A preprint, not yet reviewed by other scientists, builds a theoretical model of a large language model (LLM) platform that chooses response quality, advertising levels and subscription prices. The authors find that partly ad-supported plans can fund useful service for users who would otherwise get none, and that an intermediate advertising cap can maximize consumer surplus. The model is theoretical rather than a study of any actual platform's pricing.

Published

Oct 26, 2026

Preprint models how tax collection capacity drives economic development

A preprint, not yet reviewed by other scientists, uses a new macro-historical database to show that tax collections relative to tax administration spending rise sharply with GDP per capita. Its growth model, in which labor is needed to collect taxes, predicts that raising tax productivity in low-income economies could lift GDP per capita substantially more than Hulten's theorem suggests.

Published

Oct 26, 2026

Preprint links investor inattention in money market funds to stability risks

A preprint, not yet reviewed by other scientists, studies why mutual funds rarely switch the money market funds (MMFs) they hold cash in, using holdings data from 2010 to 2024. It finds that funds with less attentive investor bases earn higher profits and survive more often. The authors model a case where AI-driven automation reduced inattention: fees would roughly halve, but flows and the risk of fire sales and MMF runs would rise sharply.

Published

Oct 26, 2026

Preprint links a 2000 Medicare trial-cost policy to more trials for older people

A preprint, not yet reviewed by other scientists, examines a 2000 Medicare expansion that covered clinical trial costs for elderly participants, a group historically underrepresented in drug development. The authors report an immediate and large increase in trials for diseases common among the elderly, and more use of newly tested drugs among elderly people. They also analyze trial results, adverse events and drug approvals.

Published

Oct 26, 2026

Preprint models how workers' incentives shape the pace of AI-driven automation

A preprint, not yet reviewed by other scientists, models a worker who can shirk, cooperate with training, or obstruct training of an AI system that will replace them. Its authors find that dismissal is a weaker penalty for shirking, so firms must raise the worker's rent (surplus pay), and that firms paying only wages may slow training. They suggest a completion bonus equal to that rent would remove both the gain and the slowdown.

Published

Oct 26, 2026

Preprint finds family policies narrowed gender gaps across 27 countries

A preprint, not yet reviewed by other scientists, uses Luxembourg Income Study and International Social Survey Programme data for 27 countries from 1986 to 2019 to estimate how family-friendly policies affect gender gaps. The authors find that longer parental leave generally lowers gaps in wages, employment and earnings, except at high levels of leave, and that higher government spending on childcare lowers employment and earnings gaps. They estimate that expansion of these policies accounts for 24% to 33% of the fall in employment and earnings gaps in their sample.

Published

Oct 26, 2026

Preprint estimates uncertainty cuts US gains from trade by around 20 percent

A preprint, not yet reviewed by other scientists, models how uncertainty and economies of scale shape regional specialization and gains from trade, calibrated with US commuting zone and international trade data. Relative to a benchmark without uncertainty, the authors estimate that uncertainty shifts employment away from riskier sectors and locations, lowering aggregate US gains from trade by around 20 percent.

Published

Oct 26, 2026

Preprint finds better college preparation could do more than financial aid

A preprint, not yet reviewed by other scientists, uses a dynamic model of college enrollment and completion estimated from longitudinal surveys, quasi-experiments and randomized controlled trials. It finds that most unconditional financial policies have moderate effects on attendance and small effects on completion, while merit-based incentives such as forgiving student loans upon graduation have larger effects but benefit wealthier students more. The authors conclude that the greatest potential for raising attainment may come from better preparing students for college.

Published

Oct 26, 2026

Preprint simulates policies to remove gender labels and close wage gaps

A preprint, not yet reviewed by other scientists, uses a simulated model of the labor market to test two policies: gender-free applications for skilled jobs, and gender-free compensation. The authors find that gender-free applications eliminate wage gaps in the short run, but the effect is reduced once education choices adjust. Gender-free compensation reverses the wage gap in skilled markets and eliminates it in unskilled markets, even after education adjusts.

Published

Oct 26, 2026

Preprint models when rival powers use trade to contain each other

A preprint, not yet reviewed by other scientists, models two hegemons (dominant powers) that trade with each other while competing for influence over the rest of the world. Its authors find that containment, where one limits sales of its inputs to the rival and pressures other countries to stop sourcing from it, arises when the two hegemons' exports are more substitutable, less interdependent and more directly rivals. The model also suggests containment can worsen the efficiency of global production.

Published

Oct 26, 2026

Preprint models cost-minimizing subsidies for clean home equipment and solar

A preprint, not yet reviewed by other scientists, uses a new survey and a quantitative model of household energy use, which accounts for about one third of US emissions, to test subsidies for electric vehicles, heat pumps and residential solar. The authors find that solar gets the highest subsidy rate and accounts for over one third of emissions cuts, and that restricting subsidies to lower-income households saves only small costs. They also estimate household emissions would be over 15 percent higher without environmental preferences.

Published

Oct 26, 2026

Preprint reports about 2.9% of US consumers pay for generative AI services

A preprint, not yet reviewed by other scientists, uses card transaction data from 174 million consumers to estimate that about 2.9% of US consumers pay for at least one major generative AI service, nearly all on basic plans costing $30 or less a month. The authors report low switching costs: annual retention rates range from 20% to 45%, and switching rises around major model releases. Their structural model suggests strong competitive pressure, with consumers highly price sensitive.

Published

Oct 26, 2026

Preprint reviews how views on regional health care variation have changed

A preprint, not yet reviewed by other scientists, reviews how researchers' understanding of health care utilization varying across the United States has evolved since the late 2000s, when it helped shape the Affordable Care Act. The authors say supply-side and demand-side factors both matter for regional differences, that health care productivity varies substantially across providers, and that the sources of area-level productivity differences are still poorly understood.

Published

Oct 26, 2026

UK draft rules would let Northern Ireland polls be combined in 2027

This is a draft UK statutory instrument covering Northern Ireland, which has been laid before Parliament and would become UK law only if approved and made. It would modify election law so that polls for the Northern Ireland Assembly and Northern Ireland local elections can be taken together in 2027, if the Chief Electoral Officer directs that they should be.

Published

Oct 26, 2026

Final rule sets Justice Department payments for qualifying brain injuries

This final rule takes effect November 27, 2026, and adopts, with minor non-substantive changes, an earlier interim final rule that implements the HAVANA Act of 2021. The HAVANA Act lets agency heads provide payments to certain people with qualifying brain injuries. The rule covers current and former Justice Department employees and their dependents, and changes the titles of some officials in the payment review process and the earliest eligibility date for claims.

Published

Oct 27, 2026

Effective

Nov 27, 2026

How to weigh in: No comment period: this is a final rule.

OpenAI shares data on how people use ChatGPT for 165 work activities

OpenAI says in its announcement that OpenAI Signals data covers 165 work activities across nearly 100 countries. The company says the data shows how people use ChatGPT for work and how that usage changes over time.

Published

Oct 26, 2026

Final rule sets Alaska subsistence hunting and trapping rules for 2026-27 and 2027-28

This is a final rule that takes effect October 27, 2026, and revises federal regulations on hunting and trapping seasons, harvest limits, and methods for taking wildlife for subsistence uses on public lands in Alaska. It covers the 2026-27 and 2027-28 regulatory years and is issued by the Federal Subsistence Board, which also addresses customary and traditional use determinations and makes administrative corrections. The abstract does not say who is affected beyond the subsistence uses it covers.

Published

Oct 27, 2026

Effective

Oct 27, 2026

How to weigh in: No comment period: this is a final rule.

Proposed rule would align US hazardous materials rules with international standards

This is a proposed rule from the Pipeline and Hazardous Materials Safety Administration (PHMSA) in the Transportation Department. It would update the Hazardous Materials Regulations to adopt certain international regulations and standards on shipping names, hazard classes, packing groups, packaging, air transport quantity limits and vessel stowage. The agency says the aim is consistency with international rules and lower costs.

Published

Oct 27, 2026

Comments close

Dec 28, 2026

How to weigh in: Comment by December 28, 2026.

Temporary rule halts Pacific cod fishing with pot gear in the Gulf of Alaska

This is a temporary rule that took effect October 23, 2026, from the National Oceanic and Atmospheric Administration (NOAA). It prohibits directed fishing (fishing aimed at that species) for Pacific cod by vessels using pot gear in the Western Regulatory Area of the Gulf of Alaska. The stated purpose is to prevent exceeding the 2026 total allowable catch for that gear.

Published

Oct 27, 2026

Effective

Oct 23, 2026

How to weigh in: No comment period: this is a final rule.

Final rule lets federal firearm licensees run background checks on some employees

This final rule takes effect November 27, 2026, and amends Justice Department regulations on the National Instant Criminal Background Check System (NICS) of the Federal Bureau of Investigation (FBI). It allows Federal Firearm Licensees (FFLs) to use NICS to voluntarily run employment background checks on certain current or prospective employees, which the rule calls firearm handler background checks.

Published

Oct 27, 2026

Effective

Nov 27, 2026

How to weigh in: No comment period: this is a final rule.

UK draft order would raise maximum customs rule penalty from £2,500 to £10,000

This is a draft UK statutory instrument, which has been laid before Parliament and would become UK law only if approved and made. It would raise the maximum penalty that may be set for contravening a relevant customs rule from £2,500 to £10,000, by amending section 26(5) of the Finance Act 2003. The abstract does not say who would be affected.

Published

Oct 26, 2026

Preprint proposes an explainable model for forecasting COVID-19 spread

A preprint, not yet reviewed by other scientists, combines a susceptible-exposed-infectious-recovered (SEIR) epidemic model with a Temporal Fusion Transformer, a deep learning model, to forecast COVID-19 infections across regions. The authors say it was more stable and accurate than a calibrated standalone SEIR model. They use SHAP (SHapley Additive exPlanations) to show which factors drove surges and slowdowns in each region.

Published

Oct 26, 2026

Preprint reports generative AI use increased collaboration among knowledge workers

A preprint, not yet reviewed by other scientists, tracked more than 12,000 knowledge workers for 13 months during a staged rollout of Microsoft Copilot, an AI-powered assistant. Using two quasi-experimental methods, the authors estimate that generative AI increased collaboration time and the number of colleagues people worked with. They also found that users concentrated more collaboration on colleagues they already trusted, and suggest AI may not replace human-to-human interaction.

Published

Oct 26, 2026

Humid heat is linked to shifts in conception and pregnancy termination in Nigeria

A peer-reviewed study in PNAS used household health surveys and weather data from 1983 to 2016 to examine how humid heat affects fertility in Nigeria. It found that a 1 °C rise in humid heat was linked to fewer conceptions at the time, while heat one to two months earlier was linked to more conceptions, and heat during pregnancy was linked to more pregnancy terminations. This is an observational study, which shows a link, not a cause, and the authors say the net effect is more births, though timing may shift.

Published

Oct 26, 2026

Temperature extremes are linked to stronger climate concern and Green voting in Europe

A peer-reviewed study using European Social Survey data from 25 countries, covering 2012 to 2022, links warm spells to more worry about climate change and more votes for Green parties and coalitions. For each extra degree of excess temperature during warm spells over the previous 12 months, the probability of being worried about climate change rose by about 4.0 percentage points and of voting Green by about 2.8 points. The increase was largest for low-educated men, who had the lowest concern to start with. This is an observational study, which shows a link, not a cause.

Published

Oct 26, 2026

Study links an RNA molecule to dengue virus replication in cells

A peer-reviewed study reports that a circular RNA (circRNA) called circEPSTI1 is raised in dengue patients and helps the virus multiply by blocking another RNA, miR-942-5p. In cell experiments, the compound Tiplaxtinin reduced virus replication by lowering circEPSTI1. The authors say the findings point to therapeutic potential for dengue, and the work is laboratory research.

Published

Oct 26, 2026

Preprint reports a catalyst-free way to make olefins from complex hydrocarbons

A preprint, not yet reviewed by other scientists, reports that pulsed Joule heating, a method using short electrical heating pulses, produces light olefins from complex hydrocarbons without a catalyst. The authors say the yields are comparable to those of catalytic cracking, and that crude oil treated this way gave a light olefin yield of approximately 38 wt%. They say the framework could inform electrified industrial olefin production.

Published

Oct 26, 2026

Preprint estimates global ozone exposure above 50 ppb more than doubled since 2005

A preprint, not yet reviewed by other scientists, combines satellite and ground measurements of ozone into a global dataset covering 2005 to 2022. It estimates that the share of the world population exposed to ozone above 50 parts per billion (ppb) rose from 17.2% to 41.0% over that period. The authors say satellite data adds little where monitoring is dense but reduces uncertainty across large unmonitored gaps.

Published

Oct 26, 2026

Preprint reports computer-designed antibodies that activate or block hard drug targets

A preprint, not yet reviewed by other scientists, describes a design pipeline built around a generative model called Pythia-1. The authors say screening up to 48 designed candidates for each of 22 therapeutic targets yielded antibodies with single-digit nanomolar affinities, and some with agonist (switching on) or antagonist (blocking) activity against G protein-coupled receptors (GPCRs). They have released the sequences of their lead candidates so others can test them independently.

Published

Oct 26, 2026

Preprint maps how ivermectin modulates immune receptors in COVID-19 models

A preprint, not yet reviewed by other scientists, studies how ivermectin (IVM) affects immune responses to the coronavirus behind COVID-19, using human cell co-cultures and hamsters. The authors report that blocking the 7nAChR or P2X4 receptors removed ivermectin's benefit in hamsters, while positive allosteric modulators (drugs that enhance receptor activity) reduced lung pathology and loss of smell (anosmia). They say these receptors and the CXCL10 and CXCL5 signalling axis are promising targets for host-directed therapy.

Published

Oct 26, 2026

Preprint maps immune cell responses to all cytokines in the human genome

A preprint, not yet reviewed by other scientists, describes high-throughput cell-free synthesis of signaling proteins, which the authors used to measure how primary human immune cells respond to every cytokine encoded in the human genome. The authors say Growth Differentiation Factor 9 (GDF9), an ovary-produced cytokine, mimics some protein-level responses and cancer-killing effects of interleukin-2 (IL-2). They also built computational methods to prioritize drivers of disease-linked gene signatures and drug targets.

Published

Oct 26, 2026