Related Experiment Videos
Transmission of Campylobacter jejuni by the housefly (Musca domestica)
Abstract:
Houseflies (Musca domestica) were infected with Campylobacter jejuni after being confined for 5 days in a Horsfall isolator containing 25-day-old chickens known to be fecal excretors of the organism. Contaminated flies, when subsequently transferred to a second unit, transmitted C. jejuni to specific-pathogen-free chickens. Allowing a sample of 32 houseflies to ingest C. jejuni in a liquid suspension resulted in recovery rates of 20% from the feet and ventral surface of the body and 70% from the viscera. These experiments demonstrated the potential role of flies in the dissemination of avian campylobacteriosis.
Insights
Houseflies can spread Campylobacter jejuni to chickens, contributing to avian campylobacteriosis. This study shows flies can transmit the bacteria after ingestion and contact with infected birds.
Area of Science:
- Veterinary Microbiology
- Food Safety
- Infectious Disease Transmission
Background:
- Campylobacter jejuni is a significant cause of bacterial gastroenteritis in humans and a common pathogen in poultry.
- Poultry farms are a primary source of C. jejuni infections, necessitating an understanding of transmission routes.
- The role of insect vectors, such as houseflies (Musca domestica), in disseminating C. jejuni within poultry environments requires investigation.
Purpose of the Study:
- To investigate the potential of houseflies as vectors for transmitting Campylobacter jejuni to chickens.
- To determine the efficiency of C. jejuni acquisition and retention by houseflies.
- To assess the role of flies in the spread of avian campylobacteriosis.
Main Methods:
- Houseflies were exposed to C. jejuni by confinement with infected chickens and by ingestion of a C. jejuni liquid suspension.
- Contaminated flies were introduced to a separate unit containing specific-pathogen-free chickens to assess transmission.
- C. jejuni recovery rates were determined from different parts of the flies (feet, body surface, viscera) after ingestion.
Main Results:
- Houseflies successfully transmitted C. jejuni to specific-pathogen-free chickens after contact with infected birds.
- Following ingestion, C. jejuni was recovered from 20% of fly feet and ventral surfaces and 70% from the viscera.
- These findings indicate efficient acquisition and potential for dissemination by houseflies.
Conclusions:
- Houseflies (Musca domestica) can act as mechanical vectors for Campylobacter jejuni.
- Flies play a significant role in the dissemination of C. jejuni, contributing to avian campylobacteriosis outbreaks.
- Control of housefly populations may be crucial in preventing C. jejuni transmission in poultry farming.