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Updated: Aug 8, 2026
06:02
Arbovirus Infections As Screening Tools for the Identification of Viral Immunomodulators and Host Antiviral Factors
Published on: September 13, 2018
Relationships between host viremia and vector susceptibility for arboviruses
Cynthia C Lord1, C Roxanne Rutledge, Walter J Tabachnick
1Florida Medical Entomology Laboratory, University of Florida-IFAS, Vero Beach 32962, USA.
Journal of Medical Entomology
|June 3, 2006
Summary
Threshold models may inaccurately assess pathogen transmission by underestimating hosts with low viremia. More accurate models are needed to understand host importance in vector infection dynamics.
Area of Science:
- Epidemiology
- Vector-borne disease ecology
- Mathematical modeling in biology
Background:
- Host viremia levels are critical for pathogen transmission to vectors.
- Existing threshold models may oversimplify the complex relationship between host viremia and vector infection.
Purpose of the Study:
- To evaluate the impact of different modeling approaches on assessing the role of host species in pathogen transmission.
- To compare threshold models with probabilistic models for understanding host-vector interactions.
Main Methods:
- Utilized a threshold model for host-vector infection.
- Developed and applied probabilistic models relating host viremia to vector infection, including one incorporating avian mortality.
Main Results:
- Threshold models can underestimate the significance of hosts with low viremias.
- Probabilistic models reveal that hosts with viremia peaking near lethal levels can maximize mosquito infection.
Conclusions:
- The relationship between host viremia and vector infection is complex and requires more accurate modeling.
- Current understanding of host importance in vector infection is limited by a lack of experimental data and reliance on potentially flawed models.
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