Viral Tracking
Viral Tracking - Related Videos
03:49
A Luciferase-Fluorescent Reporter Influenza Virus to Track Viral Infections
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2025
This video demonstrates a method to track viral infections in mouse models using a recombinant luciferase and fluorescence protein-expressing bi-reporter Influenza A virus. This method enables both in vivo and ex vivo studies, enabling researchers to gain insights into viral dynamics and the effects of interventions.
11:29
Cost-effective Method for Microbial Source Tracking Using Specific Human and Animal Viruses
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Cited by 23 •
2011
The study describes a cost-effective method for the identification of the source of fecal/urine contamination or contamination by nitrates in water using qPCR for the specific quantification of human/porcine/bovine DNA viruses, adenoviruses and polyomaviruses, proposed as MST tools.
03:13
In Utero Viral Transduction in a Mouse
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2025
Source: Lutz, D., et al. Assessment of Ultrastructural Neuroplasticity Parameters After In Utero Transduction of the Developing Mouse Brain and Spinal Cord. J. Vis. Exp. (2019).This video demonstrates viral transduction via in-utero injection in mouse embryos. A pregnant mouse is prepared for the surgery, and a midline incision is made to expose the uterine horns. A mixture of a virus containing the desired gene and a tracking dye is injected into the embryos within the uterine sacs at the...
05:55
Multiple Object Tracking
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2023
Source: Laboratory of Jonathan Flombaum—Johns Hopkins University In a staggeringly complex and engaging world, it is crucial to selectively process some stimuli at the expense of others. Experimental psychologists call this ability attention. Specifically, visual attention refers to the ability to selectively process aspects of a visual scene. Many paradigms used to study visual attention involve brief, punctuated, and repeated trials. However, everyday situations often place sustained demands...
13:45
Using a Pan-Viral Microarray Assay (Virochip) to Screen Clinical Samples for Viral Pathogens
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Cited by 84 •
2011
The Virochip is a pan-viral microarray designed to simultaneously detect all known viruses as well as novel viruses on the basis of conserved sequence homology. Here we demonstrate how to run a Virochip assay to analyze clinical samples for the presence of both known and unknown viruses.
FAQs
Fluorescent and luminescent reporters convert otherwise difficult-to-follow infection events into detectable signals. Investigators can label virions directly or engineer reporter viruses that generate fluorescence or luminescence, then compare signal location and patterns over time. This approach links observable imaging results with viral movement, replication, and spread, making infection dynamics accessible in cells, tissues, or whole organisms.
The distinction comes from following where signal appears and how it changes over time. Spatial patterns can indicate movement between cells or tissues, whereas temporal changes in reporter-associated signal can help examine replication dynamics. Interpreting both dimensions together lets researchers relate local infection events to dissemination and broader disease progression.
By aligning viral location and spread with host responses, investigators can examine whether infection remains localized, disseminates through tissues, or continues as immune defenses act. In immunology and infection studies, this provides a way to connect viral behavior with immune protection and processes associated with pathogenesis, rather than measuring host responses in isolation.
A study generally begins by selecting either labeled virions or a reporter-virus design suited to the infection question. Investigators introduce the system into host cells, tissues, or organisms, collect images or other signals over time, and compare the resulting patterns. Analysis then relates viral behavior to dissemination, immune responses, disease progression, or treatment effects.
Microscopy and other imaging methods provide the readout that makes viral behavior observable across time and biological scale. Fluorescent signals can be followed in images, while luminescent signals provide another measurable indication of infection. Depending on the system, these observations can show where infection is occurring and how it changes across host cells, tissues, or organisms.
Researchers may choose this approach when the central question concerns how infection unfolds rather than only whether infection is present. It supports pathogenesis studies, evaluation of antiviral treatments, vaccine-response research, and transmission investigations. Following viral behavior over time can connect an intervention or immune response with altered spread, replication, or disease progression.