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Infectious DiseaseClinical Practice2 min read

Viral Aetiology of Lower Respiratory Tract Infections in Infants Attending Primary Care in Eastern Spain, 2023-2025

To describe seasonal patterns of respiratory viruses in infants presenting to primary care (PC) after the rollout of the RSV-immunisation programme in Spain, we analysed multiplex RT-PCR results from infants <1 year with lower respiratory tract infections (LRTIs) attending 57 PC centres in Valencia and Murcia across two seasons.

Published in The Journal of Infectious DiseasesClinical evidence review
3/5 Observational
Evidence Meter · 3/5

Real-World Observation

Finds meaningful patterns in human health records or cohorts, though observational data cannot prove direct cause.

Source

Real-World Observation

3/5

Our findings highlight the importance of community-based surveillance systems for providing real-world evidence to inform future immunisation strategies.

What Changes?

Infectious Disease · Clinical Practice

Current Standard

Conventional infectious disease practice relies on standard-of-care monitoring and existing regimens prior to this clinical evidence review.

New Finding

Among the 307 infants, rhinovirus/enterovirus and RSV were the most common detections in both periods. hMPV, bocavirus, and influenza followed.

3 Key Takeaways

Plain English Summary
  1. 01Core Finding

    Delivered via viral Aetiology of Lower Respiratory Tract Infections in Infants Attending Primary, this clinical practice approach targets Immune response.

  2. 02Study Evidence

    Study design used a clinical evidence review protocol to track clinical outcomes.

  3. 03Practical Meaning

    Benefits and risks vary by individual health history — discuss with a healthcare professional.

What This Means for You

Our findings highlight the importance of community-based surveillance systems for providing real-world evidence to inform future immunisation strategies.

The Discovery

To describe seasonal patterns of respiratory viruses in infants presenting to primary care (PC) after the rollout of the RSV-immunisation programme in Spain, we analysed multiplex RT-PCR results from infants <1 year with lower respiratory tract infections (LRTIs) attending 57 PC centres in Valencia and Murcia across two seasons. Among the 307 infants, rhinovirus/enterovirus and RSV were the most common detections in both periods. hMPV, bocavirus, and influenza followed.

How It Works, Simply

This infectious disease research focuses on immune response. Researchers evaluated it using a standard-of-care clinical practice · Clinical evidence review at the clinical practice stage of medical research.

3 Key Takeaways

Clinical Takeaways
  1. 01Core Finding

    Delivered via viral Aetiology of Lower Respiratory Tract Infections in Infants Attending Primary, this clinical practice approach targets Immune response.

  2. 02Study Evidence

    Study design used a clinical evidence review protocol to track clinical outcomes.

  3. 03Practical Meaning

    Benefits and risks vary by individual health history — discuss with a healthcare professional.

01

Biological Mechanism & Study Design

Study Design & Cohort

Clinical evidence review

Standard-of-care clinical practice · Clinical evidence review · Clinical Practice

Biological Pathway & Modality

Immune response

Intervention: Viral Aetiology of Lower Respiratory Tract Infections in Infants Attending Primary

02

Experimental Findings & Endpoints

To describe seasonal patterns of respiratory viruses in infants presenting to primary care (PC) after the rollout of the RSV-immunisation programme in Spain, we analysed multiplex RT-PCR results from infants <1 year with lower respiratory tract infections (LRTIs) attending 57 PC centres in Valencia and Murcia across two seasons.

Among the 307 infants, rhinovirus/enterovirus and RSV were the most common detections in both periods. hMPV, bocavirus, and influenza followed.

03

Clinical Translation & Practice Context

Our findings highlight the importance of community-based surveillance systems for providing real-world evidence to inform future immunisation strategies.

03

The Bottom Line · Clinical Pearl

“Our findings highlight the importance of community-based surveillance systems for providing real-world evidence to inform future immunisation strategies.”

Published in The Journal of Infectious Diseases · Current Stage: Clinical Practice

Infectious Disease · Clinical Practice
Study Type
Clinical evidence review

Standard-of-care clinical practice · Clinical evidence review

Evidence Score
3/5 · Real-World Observation
Evidence Meter · 3/5

Real-World Observation

Finds meaningful patterns in human health records or cohorts, though observational data cannot prove direct cause.

Finds meaningful patterns in human health records or cohorts, though observational data cannot prove direct cause.

Who It Applies To
Standard-of-care clinical practice · Clinical evidence review in infectious disease care
Intervention & Mechanism
Viral Aetiology of Lower Respiratory Tract Infections in Infants Attending Primary

Immune response

Key Limitation
Benefits and risks vary by individual health history — discuss with a healthcare professional.

Translational Stage

LEVEL 1 · Clinical Practice

Classified as Clinical evidence review along the clinical evidence continuum

  1. Lab & Discovery
  2. Early Trials
  3. Human Evidence
  4. 4Clinical PracticeActive

Original Publication & AMA Citation

Viral Aetiology of Lower Respiratory Tract Infections in Infants Attending Primary Care in Eastern Spain, 2023-2025. The Journal of Infectious Diseases. Published 2026;Nov 5. Accessed November 15, 2026. https://pubmed.ncbi.nlm.nih.gov/42987210/

The Journal of Infectious Diseases

https://pubmed.ncbi.nlm.nih.gov/42987210/

Read Original Paper

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