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Microorganisms publishes Special Issues to create collections of papers on specific topics, with the aim of building a community of authors and readers to discuss the latest research and develop new ideas and research directions. Special Issues are led by Guest Editors, who are experts on the topic and all Special Issue submissions follow MDPI's standard editorial process. The journal’s Editor-in-Chief and/or designated Editorial Board Member will oversee Guest Editor appointments and Special Issue proposals, checking their content for relevance and ensuring the suitability of the material for the journal. The papers published in a Special Issue will be collected and displayed on a dedicated page of the journal’s website. Further information on MDPI's Special Issue policies and Guest Editor responsibilities can be found here. For any inquiries related to a Special Issue, please contact the Editorial Office.

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Clinical Applications and Validation of Probiotics: Exploring Therapeutic and Preventive Potential Across Diverse Medical Conditions

edited by

Francesco Broccolo

and

Marcello Romeo

submission deadline 28 Feb 2026 | 2 articles | Viewed by 5468 | Submission Open

Keywords: probiotics; microbiota; clinical validation; therapeutic applications; preventive therapy; novel probiotic blends; medical conditions; specific strains

(This special issue belongs to the Section Medical Microbiology)

Oral Microbiomes and One Health Approach

edited by Daisuke Nagakubo

submission deadline 28 Feb 2026 | 2 articles | Viewed by 5338 | Submission Open

Keywords: oral microbiome; systemic disease; environmental factors; oral pathogens; immune response; antimicrobial agents; nutrition

(This special issue belongs to the Section Microbiomes)

Focus on Pediatric Infectious Diseases

edited by

Katarzyna Mazur-Melewska

submission deadline 28 Feb 2026 | 2 articles | Viewed by 5311 | Submission Open

Keywords: pediatric; infectious diseases; viral infection; bacterial infection; parasites; therapy; epidemiology; immunization

(This special issue belongs to the Section Medical Microbiology)

Surveillance of Health-Relevant Pathogens Employing Wastewater

edited by Bernd Manfred Gawlik and Gernot Marx

submission deadline 28 Feb 2026 | 4 articles | Viewed by 5078 | Submission Open

Keywords: wastewater and environmental surveillance (WES); emerging pathogens; antimicrobial resistance; public health; pathogen monitoring; global health security

(This special issue belongs to the Section Environmental Microbiology)

Microbiome Research: Past, Present, and Future

edited by

Eric Patridge

submission deadline 28 Feb 2026 | 2 articles | Viewed by 4249 | Submission Open

Keywords: human microbiome; high-throughput technologies; host– microbe interactions; disease and health; gene expression/metatranscriptomics; functional genomics/orthologs; bioinformatics advances in microbial research; new bacterial pathogens/virulence factors; microbial dysbiosis/homeostasis

(This special issue belongs to the Section Microbiomes)

Microbial Mechanisms for Soil Improvement and Plant Growth

edited by

Qicong Wu

and Hui Zhang

submission deadline 28 Feb 2026 | 5 articles | Viewed by 4180 | Submission Open

Keywords: microbial adaptation; soil health; environmental stresses; plant growth promotion; nutrient cycling

(This special issue belongs to the Section Plant Microbe Interactions)

Latest Research in Parasitology: Unlocking Mechanisms, Developing Solutions

edited by

Norma Rivera-Fernández

and Teresa Fortoul

submission deadline 28 Feb 2026 | 3 articles | Viewed by 3492 | Submission Open

Keywords: parasites; parasitology; veterinary parasitology; one health approach; parasitology research

(This special issue belongs to the Section Medical Microbiology)

Bacterial Communication: The Quorum Sensing Paradigm

edited by Ritika Gupta

submission deadline 28 Feb 2026 | 2 articles | Viewed by 2822 | Submission Open

Keywords: communication; crosstalk; virulence; biofilms; autoinducers; therapeutic targets; infectious diseases

(This special issue belongs to the Section Biofilm)

Pathogens and Aquaculture: 2nd Edition

edited by

Godoy Marcos

and Juan Pablo Pontigo

submission deadline 28 Feb 2026 | Viewed by 2175 | Submission Open

Keywords: fish; salmon; diseases; pathology; histopathology; virology; molecular epidemiology

(This special issue belongs to the Section Veterinary Microbiology)

Promotion of Food Safety and Functional Improvement Using Microorganisms

edited by

Franca Rossi

submission deadline 28 Feb 2026 | 1 articles | Viewed by 1997 | Submission Open

Keywords: beneficial microorganisms; food spoilage prevention; foodborne pathogen inhibition; antagonism toward antibiotic resistance gene carriers; enrichment in health-promoting substances; detoxification; shelf life extension; improvement of sensory properties

(This special issue belongs to the Section Food Microbiology)

Avian Pathogens: Importance in Animal Health and Zoonotic Risks

edited by

Victor M. Petrone-Garcia

and Inkar Castellanos-Huerta

submission deadline 28 Feb 2026 | 3 articles | Viewed by 1720 | Submission Open

Keywords: avian pathogens; zoonosis; antimicrobial resistance; microbiome; molecular diagnosis

(This special issue belongs to the Section Veterinary Microbiology)

Bio-Convergence: Microorganism Usage for Sustainability Applications

edited by Yuval Dorfan

submission deadline 28 Feb 2026 | 2 articles | Viewed by 1683 | Submission Open

Keywords: bio-convergence; synthetic biology; sustainability; non-biological applications; proteomics; metabolomics; biofilm; microorganisms; climate change

(This special issue belongs to the Section Microbial Biotechnology)

Surveillance of Pathogens in the Environment

edited by

Francesca Pennino

submission deadline 28 Feb 2026 | 1 articles | Viewed by 1459 | Submission Open

Keywords: pathogens; environment; surveillance; epidemiology; health; water; wastewater; surface; air; food

(This special issue belongs to the Section Environmental Microbiology)

Natural and Urban Forest Viromes and the Tree-Associated Microbiome: Composition, Properties, and Interactions

edited by

Julio J. Diez

and Artemis Rumbou

submission deadline 28 Feb 2026 | 1 articles | Viewed by 1339 | Submission Open

Keywords: virome; plant pathogenic virus; mycovirus; biocontrol agent; microbiota

(This special issue belongs to the Section Plant Microbe Interactions)

Microbial Infections in Ruminants

edited by

Adrian-Valentin Potârniche

submission deadline 28 Feb 2026 | 1 articles | Viewed by 1224 | Submission Open

Keywords: ruminant livestock; wild ruminants; microbial infections; epidemiology; prevention; pathogenesis; bacteria; viruses; diagnostic; zoonosis

(This special issue belongs to the Section Veterinary Microbiology)

Beneficial Microorganisms Against Phytopathogens: Innovations in Sustainable Plant Protection

edited by

Essaid Ait Barka

and

Rachid Lahlali

submission deadline 28 Feb 2026 | 1 articles | Viewed by 889 | Submission Open

Keywords: beneficial microorganisms; biocontrol; phytopathogens; PGPR; endophytes; mycorrhizal fungi; induced systemic resistance; microbiome engineering; synthetic microbial communities; sustainable agriculture

(This special issue belongs to the Section Plant Microbe Interactions)

Insect–Microbe Symbiosis

edited by

Yuxi Zhu

Mohamed Hijri

and

Tongpu Li

submission deadline 28 Feb 2026 | 1 articles | Viewed by 845 | Submission Open

Keywords: insect– microbe symbiosis; endosymbionts; microbiome; horizontal gene transfer; metabolic co-evolution; biological control; ecological resilience; antibiotic resistance; microbial ecology; host– symbiont co-evolution

(This special issue belongs to the Section Microbiomes)

Beneficial Biofilms: From Mechanisms to Applications

edited by

Tianpei Huang

and

Miłosz Tkaczyk

submission deadline 28 Feb 2026 | 1 articles | Viewed by 526 | Submission Open

Keywords: beneficial biofilms; microbial ecology; biofilm formation; environmental remediation; agricultural sustainability; industrial biotechnology; probiotic communities; quorum sensing; synthetic biology; sustainable solutions

(This special issue belongs to the Section Biofilm)

Advances in Microbial Genomics in the AMR Field

edited by

Rosalba Troncoso-Rojas

and

María Elena Báez-Flores

submission deadline 28 Feb 2026 | 1 articles | Viewed by 411 | Submission Open

Keywords: antimicrobial resistance (AMR); microbial genomics; AMR genomic surveillance; CRISPR-Cas systems and AMR; phage therapy in AMR; One Health framework and AMR; artificial intelligence in AMR; AMR monitoring tools; machine learning in AMR; bioinformatics for AMR study

(This special issue belongs to the Section Antimicrobial Agents and Resistance)

Microbial Taxonomy and Environmental Metagenomics: Diversity, Dynamics, and Functional Genes

edited by

Cassius V. Stevani

and Renato Sanches Freire

submission deadline 28 Feb 2026 | 1 articles | Viewed by 356 | Submission Open

Keywords: environmental microbiology; metagenomics; microbial diversity

(This special issue belongs to the Section Environmental Microbiology)

Microbial Communities and Indicators of Agroecosystem Health

edited by

Vlad Stoian

submission deadline 28 Feb 2026 | Viewed by 346 | Submission Open

Keywords: diversity; beneficial and negative effects; symbiosis; microbial networks; biogeochemical cycles; organic matter; biocontrol; plant growth promotion; rhizosphere; resilience; ecosystem stability

(This special issue belongs to the Section Environmental Microbiology)

New Perspectives on Virus–Host Interactions: The Relationship Between Viruses and Cancer

edited by

Erica Diani

submission deadline 28 Feb 2026 | Viewed by 321 | Submission Open

Keywords: virus– host interactions; oncogenic mechanism; viral oncogenesis; cell transformation

(This special issue belongs to the Section Molecular Microbiology and Immunology)

Pathogenic Free-Living Amoebae: Biology, Pathogenesis, Diagnosis, and Treatment

edited by

Byoung-Kuk Na

and Min Kyoung Cho

submission deadline 28 Feb 2026 | Viewed by 319 | Submission Open

Keywords: pathogenic free-living amoebae; biology; pathogenesis; diagnosis; therapeutics

(This special issue belongs to the Section Medical Microbiology)

Microalgal Ecology and Biotechnology

edited by Jong-Hee Kwon

submission deadline 28 Feb 2026 | Viewed by 272 | Submission Open

Keywords: microalgae cultivation; biofuel production; carbon sequestration; environmental sustainability; bioresource utilization

(This special issue belongs to the Section Microbial Biotechnology)

Harmful Algae and Microbes: From Molecules to Ecosystems

edited by

Lorena Durán-Riveroll

and Yuri Okolodkov

submission deadline 28 Feb 2026 | Viewed by 228 | Submission Open

Keywords: harmful algae; microbes; complex interactions; biological organization; molecular mechanisms; ecosystem dynamics

Microbiological Advances and Strategies Toward Zero Rabies Deaths by 2030

edited by

Nidia Aréchiga Ceballos

submission deadline 28 Feb 2026 | Viewed by 220 | Submission Open

Keywords: rabies; zero by 30; rabies deaths

(This special issue belongs to the Section Virology)

Advances in the Diagnosis and Management of Infectious Keratitis

edited by Ciro Costagliola,

Salvatore Troisi

, Francesco Matarazzo and

Mario Troisi

submission deadline 28 Feb 2026 | Viewed by 215 | Submission Open

Keywords: infectious keratitis; corneal infections; molecular diagnostics; antimicrobial resistance; biofilm-related infections; advanced imaging in ophthalmology; novel therapeutic strategies; ophthalmic microbiology; corneal ulcer management; pathogen identification

(This special issue belongs to the Section Medical Microbiology)

Plant–Microbe Interaction: State-of-the-Art Research in Asia (2025, 2026)

edited by

Congyan Wang

submission deadline 28 Feb 2026 | Viewed by 195 | Submission Open

Keywords: Asia; community structure; growth performance; interaction; metabolic activity; plant; microbe

(This special issue belongs to the Section Plant Microbe Interactions)

Genomic Insights into Parasite Epidemiology and Evolution

edited by Maria Luísa Lobo and

Olga Maria Guerreiro de Matos

submission deadline 28 Feb 2026 | Viewed by 185 | Submission Open

Keywords: molecular epidemiology; parasites; genomics; transmission dynamics; population genetics; host– parasite interactions; molecular diagnostics; antimicrobial resistance; phylogeography; bioinformatics

(This special issue belongs to the Section Public Health Microbiology)

Microbial Biotechnology: State-of-the-Art Research in USA

edited by

Ihana Aguiar de Aguiar Severo

submission deadline 28 Feb 2026 | Viewed by 146 | Submission Open

Keywords: microbial biotechnology; microalgae; synthetic biology; systems and metabolic engineering; bioprocesses and bioreactors; biofuels and bioproducts; bioremediation and waste valorization; environmental sustainability; industrial microbiology

(This special issue belongs to the Section Microbial Biotechnology)

Advances in Clinical Infections and Antimicrobial Resistance

edited by

Sally Cheuk Ying Wong

submission deadline 28 Feb 2026 | Viewed by 141 | Submission Open

Keywords: multidrug resistant organisms; antimicrobial resistance; clinical infections; resistant genes; antimicrobial stewardship; infection control; novel therapies

(This special issue belongs to the Section Antimicrobial Agents and Resistance)

Innovation in Biofilm Research: Cutting-Edge Approaches and Solutions

edited by

Felipe Alves de Almeida

submission deadline 28 Feb 2026 | Viewed by 116 | Submission Open

Keywords: biofilms; extracellular polymeric substances (EPS); antimicrobial tolerance; contamination; innovative control strategies

(This special issue belongs to the Section Biofilm)

Microbiome- and Macrobiome-Enhanced Weathering for Carbon Capture and Climate Mitigation

edited by

Abhijeet Singh

submission deadline 28 Feb 2026 | Viewed by 109 | Submission Open

Keywords: microbiome; carbon capture; climate mitigation; biogeochemical

(This special issue belongs to the Section Environmental Microbiology)

Recent Advances in Acanthamoeba

edited by

Wayne Heaselgrave

submission deadline 28 Feb 2026 | Viewed by 106 | Submission Open

Keywords: Acanthamoeba; free-living amoebae; contact lenses; disinfection; keratitis; endosymbionts; antimicrobial

(This special issue belongs to the Section Medical Microbiology)

Proactive Water Safety Plans and Remediation Solutions for Microbial Risk Reduction in Water

edited by

Maria Anna Coniglio

submission deadline 28 Feb 2026 | Viewed by 100 | Submission Open

Keywords: water safety plan (WSP); waterborne pathogens control; remediation solutions; microbial risk; education; drinking water safety; microbial colonization and persistence; public health management

(This special issue belongs to the Section Environmental Microbiology)

Bacterial Pathogens: Biofilm Formation and Eradication

edited by Maria João Vieira

submission deadline 28 Feb 2026 | Viewed by 97 | Submission Open

Keywords: bacterial pathogens; biofilm; biofilm formation; biofilm removal; pathogenicity in biofilms; methods to detect pathogens in biofilms

(This special issue belongs to the Section Biofilm)

Plant-Derived Solutions for Neglected Tropical Diseases: An Integrated Omics and One Health Strategy

edited by

Md Ekhtear Hossain

and Md Mehedi Hasan

submission deadline 28 Feb 2026 | Viewed by 66 | Submission Open

Keywords: neglected tropical diseases; One Health; medicinal plants; omics; bioinformatics; diagnostics; antimicrobial resistance

(This special issue belongs to the Section Public Health Microbiology)

Women’s Special Issue Series: Microorganisms

edited by

Antonella d'Arminio Monforte

and

Antonella Cingolani

submission deadline 8 Mar 2026 | 2 articles | Viewed by 6001 | Submission Open

Keywords: women; microorganisms; microbiology

Epidemiology, Detection and Control of Avian Infectious Diseases

edited by Wenjie Jin

submission deadline 15 Mar 2026 | 2 articles | Viewed by 810 | Submission Open

Keywords: avian infectious diseases; antimicrobial resistance; One Health perspectives; vaccine development; zoonoses

(This special issue belongs to the Section Veterinary Microbiology)

The Role of the Vaginal Microbiome in Women's Health

edited by

José Eleutério

submission deadline 15 Mar 2026 | Viewed by 130 | Submission Open

Keywords: vaginal microbiome; vagina; uterine cervix; vaginitis; vaginoses; women’ s health

(This special issue belongs to the Section Medical Microbiology)

Biofilm Development and Its Eradication

edited by Jean-Frédéric Dubern

submission deadline 15 Mar 2026 | Viewed by 127 | Submission Open

Keywords: biofilm formation; drug resistance; medical device; biofilm control; biofilm model; anti-biofilm molecules

(This special issue belongs to the Section Biofilm)

Probiotics: Innovations and Future Directions

edited by

Luis M. Cintas

and

Javier Feito

submission deadline 15 Mar 2026 | Viewed by 102 | Submission Open

Keywords: next-generation probiotics; engineered microorganisms; omics technologies; probiotic-based personalized medicine; probiotic-based precision nutrition; advanced probiotic delivery systems

(This special issue belongs to the Section Microbial Biotechnology)

Phage–Bacteria Interplay: Phage Biology and Phage Therapy

edited by Hesham Abdelbary and

Mariam Taha

submission deadline 31 Mar 2026 | 4 articles | Viewed by 19118 | Submission Open

Keywords: microbiome; phage therapy; phage resistance; phage biology; phage engineering

(This special issue belongs to the Section Virology)

Advances in Food Microbial Biotechnology

edited by

Luis Guillermo González-Olivares

submission deadline 31 Mar 2026 | 7 articles | Viewed by 16815 | Submission Open

Keywords: microbial biotechnology; food industry; microorganisms; controlled fermentation; genetic engineering; probiotics; prebiotics; food safety; sustainable food production; alternative proteins

(This special issue belongs to the Section Food Microbiology)

Skin Microbiome

edited by

Zhe-Xue Quan

submission deadline 31 Mar 2026 | 5 articles | Viewed by 12723 | Submission Open

Keywords: skin health; skin microbes; multi-omics and bioinformatics; host-microbe relationship

(This special issue belongs to the Section Microbiomes)

Advances in Enteric Infections Research

edited by

Andreas E. Zautner

submission deadline 31 Mar 2026 | 3 articles | Viewed by 11181 | Submission Open

Keywords: enteric diseases; Arcobacter spp.; Campylobacter spp.; Salmonella enterica; Clostridioides difficile; Yersinia spp.; E. coli pathovars; Shigella spp.; epidemiology; diagnostic assays; proteomics; genomics; pathomechanisms; virulence factors; antimicrobial resistance

(This special issue belongs to the Section Medical Microbiology)

Plant Growth-Promoting Bacteria

edited by

Mario De Andrade Lira Junior

submission deadline 31 Mar 2026 | 8 articles | Viewed by 10724 | Submission Open

Keywords: rhizobacteria; endophytic; rhizobia; biotic stress; abiotic stress; fertilizer; irrigation

(This special issue belongs to the Section Plant Microbe Interactions)

Fungal Metabolites: Powering Pharmacological and Agricultural Frontiers

edited by

Maja Karaman

and

Ewa Zapora

submission deadline 31 Mar 2026 | 6 articles | Viewed by 9471 | Submission Open

Keywords: fungi; fungal metabolites; polysaccharides; pharmacological applications; agricultural innovations; crop productivity; stress tolerance

(This special issue belongs to the Section Environmental Microbiology)

Microbial Biofilms: New Insights into Formation, Resistance and Control

edited by

Marius Stefan

submission deadline 31 Mar 2026 | 3 articles | Viewed by 8005 | Submission Open

Keywords: biofilm formation; biofilm surfaces; biofilm structure; multi-species biofilms; microbial communities; biofilm communication; biofilm cells resistance; biofilm control; new antibiofilm agents

(This special issue belongs to the Section Biofilm)

Oral Microbes and Human Health, Second Edition

edited by