What question did this study set out to answer?

The research aims to uncover the relationships between airway inflammation and microbiota features in young people, considering geographic and asthma status variations.

February 2, 2026ThoraxOpen Access

Airway microbiota in young people across four continents differ by country, asthma status and inflammatory phenotype

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The research aims to uncover the relationships between airway inflammation and microbiota features in young people, considering geographic and asthma status variations.
Conducted a cross-sectional study using 488 induced sputum samples.
Performed inflammatory phenotyping and microbiota analysis by country.
Enumerated total bacteria, Haemophilus influenzae, and Moraxella catarrhalis.
Adjusted comparisons for age and sex.
Asthma inflammatory phenotypes and microbiology varied significantly between countries.
Higher neutrophils, microbial diversity, and bacterial abundance were found in Uganda.
Airway neutrophil proportion explained variance in microbiota dissimilarity (p<0.001).
Significant positive associations between bacterial abundance and neutrophils were observed (all p<0.05).
Eosinophil proportion showed a weaker association with microbiota dissimilarity and only with Streptococcus abundance.

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Implication

Cross-sectional analysis explores airway inflammation and microbiota differences in young people, indicating geographical variations in asthma characteristics.

Cite This Study

Taylor et al. (2026) studied this question.

synapsesocial.com/papers/6980fe00c1c9540dea80fc7b https://doi.org/10.1136/thorax-2025-222965

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Implication

Cross-sectional analysis explores airway inflammation and microbiota differences in young people, indicating geographical variations in asthma characteristics.

Airway microbiota in young people across four continents differ by country, asthma status and inflammatory phenotype

Key Points

Discussion

Implication

Cite This Study

Airway microbiota in young people across four continents differ by country, asthma status and inflammatory phenotype

Key Points

Discussion

Implication

Cite This Study

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