System Maintenance Notice

Please note that maintenance work is scheduled between 4 AM and 5 AM - CET. During this time, you may experience reduced performance. Thanks for your patience.

Publications

Journal Article Systematic Review Review Ppublish

PubMed: 41943876 DOI: 10.1111/1758-2229.70272

The Indoor Microbiome: Sampling, Analysis and Emerging Trends.

Environ Microbiol Rep 18(2):e70272

Authors: Iva Šunić, Jelena Šarac, Dubravka Havaš Auguštin, Sofya Pozdniakova, Robert M W Ferguson, Matijana Jergović, David Visentin, Sílvia Borràs, Elizabeth Archer, Drew K Henderson, Sandra Vitko, Adna Ašić, Anja Bošnjaković, Željka Maglica, Carla Viegas, Natalija Novokmet, Nina Karlović, Damir Marjanović, Adam Muszyński, Yuxi Liu, Piia Karisola, Harri Alenius, Lukasz Krych, Mario Lovrić

Affiliations

  • Institute for Anthropological Research, Zagreb, Croatia.
  • Faculty of Biotechnology and Drug Development, University of Rijeka, Rijeka, Croatia.
  • AIRLAB, Barcelona Institute for Global Health, Barcelona, Spain.
  • School of Life Sciences, University of Essex, Colchester, UK.
  • Andrija Štampar Teaching Institute of Public Health, Zagreb, Croatia.
  • Department of Biology, Faculty of Science, University of Zagreb, Zagreb, Croatia.
  • Research Institute Verlab for Biomedical Engineering, Medical Devices and Artificial Intelligence, Sarajevo, Bosnia and Herzegovina.
  • H&TRC Health and Technology Research Center, ESTeSL Escola Superior de Tecnologia da Saúde, Instituto Politécnico de Lisboa, Lisbon, Portugal.
  • NOVA National School of Public Health, Public Health Research Centre, Comprehensive Health Research Center, CHRC, REAL, CCAL, NOVA University Lisbon, Lisbon, Portugal.
  • Faculty of Environmental Engineering, Warsaw University of Technology, Warsaw, Poland.
  • Human Microbiome Research (HUMI), Faculty of Medicine, University of Helsinki, Helsinki, Finland.
  • Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
  • Department of Food Science, Faculty of Science, University of Copenhagen, Frederiksberg, Denmark.
  • The Lisbon Council, Brussels, Belgium.

Abstract

Indoor spaces contain diverse microbial communities that shape human health. These microorganisms are particularly relevant to respiratory diseases, including asthma and allergies. Despite growing recognition of the importance of indoor microbial exposures, research in this field is slowed by differences in methods. These inconsistencies make it difficult to compare results and draw conclusions. This systematic review analyses 106 studies published between 2000 and 2025 that investigated indoor microbiomes in dust, air, and other matrices across homes, schools, and other built environments. We assessed sampling strategies, DNA extraction protocols, sequencing technologies, and bioinformatic pipelines, identifying trends, inconsistencies, and areas requiring harmonisation. Passive sampling, particularly dust collection, was the most common approach, while Illumina-based 16S rRNA and ITS amplicon sequencing dominated molecular analyses. However, variations in targeted gene regions, extraction kits, and analytical tools limited cross-study comparability. Ecological findings revealed consistent detection of bacterial taxa such as Staphylococcus, Streptococcus, and Corynebacterium, and fungal taxa including Cladosporium, Aspergillus, and Penicillium, with diversity shaped by building characteristics, ventilation, humidity, occupancy, and presence of pets. This review highlights the need for standardised protocols in indoor microbiome research to facilitate reproducibility, enable meta-analyses, and inform health-related guidelines for indoor environments.

MeSH

Dust, Research, Environment