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Infectious DiseasePreclinical3 min read

Biological Sex as a Determinant of Neurological Outcomes During Zika Virus Infection

Although males often exhibit more robust pathological inflammatory responses, the implications for immune responses within the central nervous system remain unclear.

Published in The Journal of Infectious DiseasesAnimal models
2/5 Preclinical
Evidence Meter · 2/5

Animal & Preclinical Data

Demonstrated in living animal models before large-scale human safety and dosing trials begin.

Source

Animal & Preclinical Data

2/5

Our findings demonstrate that sexually dimorphic immune responses contribute to increased male susceptibility to virus-induced neuropathology.

What Changes?

Infectious Disease · Preclinical

Current Standard

Existing infectious disease care has lacked direct translational evidence targeting inflammation · immune response.

New Finding

Using a mouse model of Zika virus infection, we find that males develop more severe clinical disease compared to females, despite comparable infectious viral loads.

3 Key Takeaways

Plain English Summary
  1. 01Core Finding

    Given that many viral infections can lead to long-term neurological complications, it is crucial to understand how biological sex influences neuroinflammation.

  2. 02Study Evidence

    Tested in a in vivo animal model (preclinical discovery) at the preclinical stage.

  3. 03Practical Meaning

    Early laboratory or animal model findings — human trials are still needed to confirm safety and benefit.

What This Means for You

Using a mouse model of Zika virus infection, we find that males develop more severe clinical disease compared to females, despite comparable infectious viral loads. Our findings demonstrate that sexually dimorphic immune responses contribute to increased male susceptibility to virus-induced neuropathology.

The Discovery

Biological sex is a significant determinant of host responses and disease outcomes during viral infection. Although males often exhibit more robust pathological inflammatory responses, the implications for immune responses within the central nervous system remain unclear. Given that many viral infections can lead to long-term neurological complications, it is crucial to understand how biological sex influences neuroinflammation.

How It Works, Simply

This infectious disease research focuses on inflammation · Immune response. Researchers evaluated it using an in vivo animal model (Preclinical discovery) at the preclinical stage of medical research.

3 Key Takeaways

Clinical Takeaways
  1. 01Core Finding

    Given that many viral infections can lead to long-term neurological complications, it is crucial to understand how biological sex influences neuroinflammation.

  2. 02Study Evidence

    Tested in a in vivo animal model (preclinical discovery) at the preclinical stage.

  3. 03Practical Meaning

    Early laboratory or animal model findings — human trials are still needed to confirm safety and benefit.

01

Biological Mechanism & Study Design

Study Design & Cohort

Animal models

In vivo animal model (Preclinical discovery) · Preclinical

Biological Pathway & Modality

Inflammation · Immune response

Intervention: Biological Sex as a Determinant of Neurological Outcomes During Zika Virus Infection

02

Experimental Findings & Endpoints

Biological sex is a significant determinant of host responses and disease outcomes during viral infection.

Although males often exhibit more robust pathological inflammatory responses, the implications for immune responses within the central nervous system remain unclear. Given that many viral infections can lead to long-term neurological complications, it is crucial to understand how biological sex influences neuroinflammation.

03

Clinical Translation & Practice Context

Using a mouse model of Zika virus infection, we find that males develop more severe clinical disease compared to females, despite comparable infectious viral loads.

Our findings demonstrate that sexually dimorphic immune responses contribute to increased male susceptibility to virus-induced neuropathology.

03

The Bottom Line · Clinical Pearl

“Our findings demonstrate that sexually dimorphic immune responses contribute to increased male susceptibility to virus-induced neuropathology.”

Published in The Journal of Infectious Diseases · Current Stage: Preclinical

Infectious Disease · Preclinical
Study Type
Animal models

In vivo animal model (Preclinical discovery)

Evidence Score
2/5 · Animal & Preclinical Data
Evidence Meter · 2/5

Animal & Preclinical Data

Demonstrated in living animal models before large-scale human safety and dosing trials begin.

Demonstrated in living animal models before large-scale human safety and dosing trials begin.

Who It Applies To
Preclinical research (In vivo animal model (Preclinical discovery)) — not yet tested in human patients
Intervention & Mechanism
Biological Sex as a Determinant of Neurological Outcomes During Zika Virus Infection

Inflammation · Immune response

Key Limitation
Early laboratory or animal model findings — human trials are still needed to confirm safety and benefit.

Translational Stage

LEVEL 3 · Preclinical

Classified as Animal models along the clinical evidence continuum

  1. 1PreclinicalActive
  2. 2Early Trials
  3. 3Human Evidence
  4. 4Meta & Practice

Original Publication & AMA Citation

Biological Sex as a Determinant of Neurological Outcomes During Zika Virus Infection. The Journal of Infectious Diseases. Published 2026;Nov 5. Accessed November 15, 2026. https://pubmed.ncbi.nlm.nih.gov/42987203/

The Journal of Infectious Diseases

https://pubmed.ncbi.nlm.nih.gov/42987203/

Read Original Paper

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