Rapid Diagnosis of Avian Influenza Virus in Wild Birds: Use of a Portable rRT-PCR and Freeze-dried Reagents in the Field

作者：John Y. Takekawa1, Nichola J. Hill1,2, Annie K. Schultz1, Samuel A. Iverson1, Carol J. Cardona3,4, Walter M. Boyce2, Joseph P. Dudley5 1USGS Western Ecological Research Center, 2Wildlife Health Center,University of California, Davis, 3Department of Population Health and Reproduction,University of California, Davis, 4Department of Veterinary and Biomedical Sciences,University of Minnesota , 5Science Applications International Corporation

简介：This study describes diagnosis of avian influenza in wild birds using a portable rRT-PCR system. The method takes advantage of freeze-dried reagents to screen wild birds in a non-laboratory setting, typical of an outbreak scenario. Use of molecular tools provides accurate and sensitive alternatives for rapid diagnosis.

Overview

This study describes a method for diagnosing avian influenza in wild birds using a portable rRT-PCR system. The technique utilizes freeze-dried reagents to enable screening in non-laboratory settings, typical of outbreak scenarios.

Key Study Components

Area of Science

Virology
Field diagnostics
Wildlife health

Background

Avian influenza poses a significant threat to wild bird populations.
Traditional diagnostic methods require laboratory facilities, limiting rapid response.
Portable diagnostic tools can enhance field testing capabilities.
Freeze-dried reagents simplify the process of sample analysis in remote locations.

Purpose of Study

To develop a rapid diagnostic method for avian influenza in wild birds.
To enable testing at the point of capture in field settings.
To improve the speed and accuracy of avian influenza detection.

Methods Used

Wild birds are captured using mist netting techniques.
Cloacal and oropharyngeal samples are collected promptly.
RNA extraction is performed using the RNZ Minikit.
Lyophilized reagents are used for sample preparation and amplification.

Main Results

Results can indicate the presence of avian influenza virus within 24 hours.
The method allows for immediate testing at the site of capture.
Portable PCR technology facilitates rapid diagnosis in the field.
This approach offers a sensitive alternative to traditional laboratory diagnostics.

Conclusions

The portable rRT-PCR system is effective for diagnosing avian influenza in wild birds.
Field testing enhances the ability to respond to outbreaks quickly.
Utilizing freeze-dried reagents simplifies the diagnostic process.