Related Experiment Video
Updated: Jul 19, 2026
09:07
Using Zebrafish Models of Human Influenza A Virus Infections to Screen Antiviral Drugs and Characterize Host Immune Cell Responses
Published on: January 20, 2017
Avian-human influenza epidemic model.
Shingo Iwami1, Yasuhiro Takeuchi, Xianning Liu
1Department of Mathematical Sciences, Osaka Prefecture University, Japan.
Mathematical Biosciences
|October 3, 2006
Summary
A mathematical model predicts two avian influenza outbreak types in humans. Preventing a second pandemic requires eradicating infected birds and quarantining infected humans, especially those with mutant strains.
Area of Science:
- Epidemiology
- Mathematical Biology
- Public Health
Background:
- Avian influenza poses a zoonotic threat, with potential for human-to-human transmission.
- Understanding transmission dynamics is crucial for pandemic preparedness.
Purpose of the Study:
- To develop a mathematical model for avian influenza spread from birds to humans.
- To identify key factors influencing outbreak potential and pandemic risk.
Main Methods:
- A compartmental mathematical model was formulated.
- Model simulations were used to explore different outbreak scenarios.
Main Results:
- The model predicts two distinct types of avian influenza outbreaks in humans.
- Low overall human infection numbers do not guarantee safety from a pandemic.
- Quarantining infected humans, particularly with mutant strains, is critical.
Conclusions:
- Effective avian influenza control requires both culling infected birds and isolating infected humans.
- Human quarantine is essential to prevent a secondary pandemic wave.
Related Concept Videos
01:27Influenza
Influenza is an acute, highly communicable viral disease that affects the respiratory tract and is responsible for seasonal epidemics worldwide. Influenza A is the most prevalent type associated with widespread outbreaks and is subtyped based on two surface glycoproteins: hemagglutinin (H) and neuraminidase (N), as in H1N1. These glycoproteins are essential for viral infectivity, transmission, and immune recognition. Transmission occurs primarily through respiratory droplets and contaminated...
00:57Viral Recombination
Cells are sometimes infected by more than one virus at once. When two viruses disassemble to expose their genomes for replication in the same cell, similar regions of their genomes can pair together and exchange sequences in a process called recombination. Alternatively, viruses with segmented genomes can swap segments in a process called reassortment.
00:36Viral Mutations
A mutation is a change in the sequence of bases of DNA or RNA in a genome. Some mutations occur during replication of the genome due to errors made by the polymerase enzymes that replicate DNA or RNA. Unlike DNA polymerase, RNA polymerase is prone to errors because it is not capable of “proofreading” its work. Viruses with RNA-based genomes, like HIV, therefore accrue mutations faster than viruses with DNA-based genomes. Because mutation and recombination provide the raw material for adaptive...
01:18Steps in Outbreak Investigation
In the ever-evolving field of public health, statistical analysis serves as a cornerstone for understanding and managing disease outbreaks. By leveraging various statistical tools, health professionals can predict potential outbreaks, analyze ongoing situations, and devise effective responses to mitigate impact. For that to happen, there are a few possible stages of the analysis:
01:28Infectious Diseases and Their Occurrence
Infectious diseases appear in populations through various transmission patterns, influenced by pathogen characteristics, population immunity, environmental conditions, and social behavior. Understanding these patterns is essential for effective public health surveillance and intervention. These categories—sporadic, outbreak, epidemic, pandemic, and endemic—help frame the nature and scope of disease events.Sporadic diseases occur irregularly and infrequently, without a predictable temporal or...