Infectious diseases represent one of the most dynamic frontiers in global health, covering everything from seasonal flu outbreaks to emerging viral threats that cross borders. This field focuses on how pathogens spread, how our immune systems respond, and the strategies scientists use to stop infections before they become epidemics. Because the science moves fast, waiting for traditional publication often means missing critical insights that could save lives.

At Gist.Science, we process every new preprint in this category directly from medRxiv to ensure you see the latest findings the moment they appear. Our team transforms these raw studies into both accessible plain-language explanations and detailed technical summaries, bridging the gap between complex research and public understanding. Below are the latest papers in infectious diseases, updated daily with fresh insights from the global research community.

Ethnic inequalities in respiratory virus epidemics in England: a mathematical modelling study

This mathematical modelling study demonstrates that ethnic inequalities in respiratory virus transmission in England are driven by distinct demographic characteristics and social mixing patterns, which result in varying attack rates across ethnic groups that are further modulated by local population structures and pathogen infectiousness.

Robert, A., Goodfellow, L., Pellis, L., van Leeuwen, E., Edmunds, W. J., Quilty, B. J., van Zandvoort, K., Eggo, R. M.2026-04-21📄 infectious diseases

Prevalence and Risk Factors of Respiratory Tract Infections Following Medically-Attended-Diarrhea in Children Aged 6-35 Months: Enterics for Global Health (EFGH)-Shigella Surveillance Study, 2022-2024.

In a multi-country study of nearly 9,000 children aged 6–35 months with medically-attended diarrhea, respiratory tract infections occurred in 3.8% of participants during the subsequent three months, with the highest risk observed among those aged 12–23 months, those suffering from undernutrition, and those living in poor sanitation conditions.

Conteh, B., Galagan, S. R., Badji, H., Secka, O., Bar, B. T., Rao, S. I., Atlas, H., Omore, R., Ochieng, J. B., Tapia, M., Cornick, J., Cunliffe, N., Zegarra Paredes, L. F., Colston, J., Islam, M. T. (…)2026-04-20📄 infectious diseases

Impact and cost of scaling up TB screening and diagnostics in Asias ten high-burden countries: a modelling analysis

A modeling analysis of ten high-burden Asian countries suggests that investing $12.7 billion over five years to scale up community-based screening using AI-enabled digital chest X-rays combined with molecular diagnostics could avert 9.8 million TB cases and 1.9 million deaths over a decade, with targeted approaches proving more cost-effective than untargeted mass screening.

Mandal, S., Rade, K., Singh, A., Nair, S. A., Sahu, S.2026-04-19📄 infectious diseases

Multi-species plasmids and K. pneumoniae clonal spread driving blaNDM outbreak across seven UK healthcare sites

This study characterizes a multi-site UK outbreak of blaNDM-positive Enterobacterales driven by the clonal expansion of *Klebsiella pneumoniae* ST101 and the horizontal spread of IncHI2/IncHI2A plasmids across multiple bacterial species, underscoring the critical need for linked surveillance systems to track infections across fragmented healthcare settings.

Duggan, C., Brookfield, C., Lawrie, D., Owen, V., Neal, T., Cruise, J., Fraser, A. J., Kelly, L., Graf, F. E., Cantillon, D., Lewis, J. M., Edwards, T., Heinz, E.2026-04-18📄 infectious diseases

Combined Effects of Severe Immunocompromise and Prolonged Virus Shedding on Within-Host SARS-CoV-2 Evolution in COVID-19

This study demonstrates that the combination of severe immunocompromise and prolonged SARS-CoV-2 shedding exceeding 21 days significantly accelerates the accumulation of random, genome-wide mutations within the host, highlighting the critical need for intensive antiviral strategies to limit shedding duration in this vulnerable population to mitigate the risk of novel variant emergence.

Hirata, Y., Takahashi, K., Iwamoto, N., Dam Jeong, Y., Miyamoto, S., Kawasaki, J., Mine, S., Iida, S., Saito, S., Ainai, A., Kanno, T., Katano, H., Sasaki, N., Horiba, K., Ishikane, M., Kamegai, K., H (…)2026-04-17📄 infectious diseases

SARS-CoV-2 neutralising antibody profiles reveal variant specific antibody dynamics and regional differences in infection histories in Malawi

By analyzing longitudinal neutralising antibody data from over 1,600 unvaccinated, HIV-uninfected individuals in Malawi, this study reveals rapid antibody waning, significant regional and variant-specific differences in infection dynamics, and the prevalence of reinfections, highlighting the limitations of prior immunity and the critical need for vaccination and improved surveillance in sub-Saharan Africa.

McCormack, M. J., Banda, L., Kasenda, S., Hughes, E. C., Crampin, A. C., Amoah, A. S., Read, J. M., Ho, A., Willett, B. J., Hay, J. A.2026-04-17📄 infectious diseases

Primary care metronidazole prescription in public and private facilities of South Benin: A register-based cross-sectional study

This register-based cross-sectional study in South Benin reveals that metronidazole is the second most prescribed antibiotic in primary care, with its usage significantly higher in private facilities and strongly associated with digestive, genitourinary, and skin symptoms, while being less common for fever, respiratory issues, or malaria.

TANKPINOU ZOUMENOU, H., Faucher, J.-F.2026-04-14📄 infectious diseases

Estimating the strength of symptom propagation from primary-secondary case pair data

This paper presents a data-driven methodology to quantify the strength of symptom propagation in infectious diseases, demonstrating through synthetic and real-world COVID-19 data that secondary cases are 12–17% more likely to develop symptoms if their primary case is symptomatic, while confirming that these estimates remain robust against reporting biases and age-dependent factors.

Asplin, P., Mancy, R., Keeling, M. J., Hill, E. M.2026-04-13📄 infectious diseases

Predictive Modelling to Differentiate Bacterial and Viral cases of Childhood Pneumonia in Kilifi, Kenya using Protein Markers and Clinical Data

A study of 457 children in Kilifi, Kenya, found that a predictive model combining a wide range of protein biomarkers and clinical data failed to accurately differentiate between bacterial and viral pneumonia, yielding an inadequate Area Under the Curve of 0.61.

Matuli, C., Waeni, J. M., Gicheru, E. T., Sande, C. J., Gallagher, K.2026-04-13📄 infectious diseases

A conserved grain-associated immunosuppressive niche in Sudanese patients with mycetoma.

This study utilizes spatial proteomics to reveal that, regardless of whether the mycetoma pathogen is bacterial or fungal, the tissue microenvironment immediately surrounding the pathogen grains forms a conserved immunosuppressive niche characterized by the accumulation of CD66b+ARG1+VISTA+ cells, thereby facilitating pathogen persistence.

Osman, M., Ashwin, H., Calder, G., O'Toole, P., Bakhiet, S. M., Musa, A. M., Kaye, P. M., Fahal, A. H.2026-04-13📄 infectious diseases