Related Experiment Video
Updated: May 28, 2026
08:23
Feeding of Ticks on Animals for Transmission and Xenodiagnosis in Lyme Disease Research
Published on: August 31, 2013
Co-Feeding Transmission of Tick-Borne Viruses
Sarah C Macon-Foley1, Meghan E Hermance1
1Department of Microbiology and Immunology, Frederick P. Whiddon College of Medicine, University of South Alabama, Mobile, AL 36688, USA.
Viruses
|May 27, 2026
Summary
Co-feeding transmission is a key route for tick-borne viruses (TBVs) to spread between ticks on the same host. Localized skin infection at the tick bite site facilitates this important viral maintenance pathway.
Area of Science:
- Veterinary Entomology
- Virology
- Ecology
Background:
- Tick-borne viruses (TBVs) are transmitted through complex cycles involving ticks and vertebrate hosts.
- Co-feeding transmission, where viruses spread between ticks on the same host without detectable host viremia, is a significant maintenance route for TBVs.
- The precise mechanisms of co-feeding transmission remain incompletely understood.
Purpose of the Study:
- To synthesize current knowledge on TBV co-feeding transmission.
- To highlight ecological and immunological factors influencing co-feeding transmission.
- To emphasize the role of the tick co-feeding site microenvironment in viral transfer.
Main Methods:
- Literature review synthesizing existing research on tick-borne virus transmission.
- Analysis of ecological and immunological factors affecting co-feeding transmission dynamics.
- Focus on the cutaneous microenvironment at the tick co-feeding site.
Main Results:
- Co-feeding transmission is crucial for maintaining TBVs in natural settings.
- Localized viral replication and tick saliva at the co-feeding site create favorable conditions for virus transfer.
- Specific ecological and seasonal conditions are required for efficient co-feeding transmission.
Conclusions:
- Localized skin infection is a central mechanism in co-feeding transmission of TBVs.
- Understanding the cellular and molecular processes at the co-feeding site is critical.
- Further research is needed to elucidate the detailed mechanisms governing this transmission route.
Related Concept Videos
01:24Transmission of Pathogens
Pathogens spread from their reservoirs to susceptible hosts through three main routes: contact transmission, vehicle transmission, and vector transmission. Each route involves distinct mechanisms of transfer.Contact TransmissionThis category includes direct contact, indirect contact, and droplet transmission:Direct contact involves immediate physical interaction between individuals—such as a handshake—which can spread pathogens like Streptococcus pyogenes, the bacterium responsible for...
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.
01:26Rocky Mountain Spotted Fever
Rocky Mountain Spotted Fever (RMSF) is a severe tick-borne illness caused by Rickettsia rickettsii, a Gram-negative, coccobacillary bacterium. This pathogen is an obligate intracellular parasite, requiring a host cell for replication. Transmission occurs through the bite of an infected tick. In the United States, the most important vectors are Dermacentor variabilis (American dog tick) and Dermacentor andersoni (Rocky Mountain wood tick), though other tick species may also serve as vectors.
01:25Arboviral Encephalitis
Arboviral encephalitis refers to brain inflammation caused by arthropod-borne viruses, particularly those transmitted through mosquito vectors. Among these, West Nile virus (WNV), a member of the Flaviviridae family, is a significant public health concern. WNV is an enveloped, positive-sense, single-stranded RNA virus. Human infection typically begins when an infected mosquito introduces the virus into the dermis during feeding. The primary transmission cycle involves birds as amplifying hosts...
01:28Rabies
Rabies is a lethal zoonotic disease caused by a single-stranded, negative-sense RNA virus of the Lyssavirus genus, within the family Rhabdoviridae. Its primary mode of transmission to humans is through bites or saliva-contaminated scratches from infected mammals such as dogs, bats, raccoons, or foxes. Transmission can also occur if infectious saliva contacts abraded skin or intact mucous membranes, including the conjunctiva.Viral Entry and Early ReplicationOnce introduced at the bite or scratch...
01:17Transmission-based Precautions I: Contact, Enteric, and Droplets
Transmission-based precautions are for patients known to be infected or suspected to be infected or colonized with organisms that pose a significant risk to others. Some transmission-based precautions include contact, enteric, and droplet.
Contact Precautions:
Contact precautions are the measures taken to prevent the transmission of infectious agents, especially epidemiologically important microorganisms such as MRSA or influenza, primarily transmitted through direct or indirect contact with an...
Contact Precautions:
Contact precautions are the measures taken to prevent the transmission of infectious agents, especially epidemiologically important microorganisms such as MRSA or influenza, primarily transmitted through direct or indirect contact with an...