Age-specific Infection
Age-specific Infection - Related Videos
10:57
Determining Soil-transmitted Helminth Infection Status and Physical Fitness of School-aged Children
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Cited by 58 •
2012
Chronic infection with soil-transmitted helminths (STHs) causes malabsorption, stunting, and wasting in the growing child. Hence, it is plausible that these infections also reduce the physical fitness of children. Here, we visualize two techniques for the diagnosis of STHs and the 20-meter shuttle run test for assessing children's physical fitness.
09:14
An Introduction to Aging and Regeneration
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2023
Tissues are maintained through a balance of cellular aging and regeneration. Aging refers to the gradual loss of cellular function, and regeneration is the repair of damaged tissue generally mediated by preexisting adult or somatic stem cells. Scientists are interested in understanding the biological mechanisms behind these two complex processes. By doing so, researchers may be able to use somatic stem cells to treat degenerative diseases and develop therapies that could delay the effects of...
10:01
Evaluation of Zika Virus-specific T-cell Responses in Immunoprivileged Organs of Infected Ifnar1-/- Mice
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Cited by 5 •
2018
A protocol to evaluate antigen-specific T-cell responses in the immunoprivileged organs of the Ifnar1-/- murine model for the Zika virus (ZIKV) infection is described. This method is pivotal for investigating the cellular mechanisms of the protection and immunopathogenesis of ZIKV vaccines and is also valuable for their efficacy evaluation.
20:47
A Technique to Simultaneously Visualize Virus-Specific CD8+ T Cells and Virus-Infected Cells In situ
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Cited by 10 •
2009
A technique combining in situ tetramer staining and in situ hybridization (ISTH) enables visualization, mapping and analysis of the spatial proximity of virus-specific CD8+ T cells to their virus-infected targets, and determination of the quantitative relationships between these immune effectors and targets to infection outcomes.
10:41
Continuous High-resolution Microscopic Observation of Replicative Aging in Budding Yeast
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Cited by 10 •
2013
We describe here the operation of a microfluidic device that allows continuous and high-resolution microscopic imaging of single budding yeast cells during their complete replicative and/or chronological lifespan.
FAQs
Age-related immune changes can alter both the likelihood of infection and the body’s ability to control it. Early in life, limited immune experience may affect responses to infectious agents, while later-life weakening of innate and adaptive responses may reduce pathogen control and delay recovery. These differences help explain why the same agent can produce different outcomes at different life stages.
Immune status is only one part of infection risk. Previous exposure can influence how the immune system responds to a pathogen, while skin and mucosal barriers help limit entry before deeper immune defenses are engaged. Considering these factors together gives researchers a more complete explanation of age-related differences than focusing on immune cells or responses alone.
Changes in innate and adaptive responses may influence separate stages of infection control. Innate defenses provide an early response, whereas adaptive defenses reflect more specialized immune activity shaped by development and experience. When either arm changes with age, pathogen control and recovery may also change, helping researchers interpret why disease severity is not uniform across age groups.
Studies should treat life stage as an important source of biological variation rather than assuming that findings apply equally to everyone. Researchers can compare age groups while considering immune development, immune aging, exposure history, physiology, and barrier defenses. This approach helps distinguish age-related effects from other influences and improves interpretation of infection risk, severity, and recovery.
Age-related variation in immune responses is relevant when researchers evaluate vaccination strategies. Differences in immune development, prior exposure, and later-life immune weakening may affect how vaccine responses are interpreted across age groups. Including these factors can help researchers assess whether a strategy performs consistently across life stages and identify where age should be considered in study design.
Age can provide essential context for judging infection risk, disease severity, pathogen control, and recovery. Infants and older adults may differ in immune experience or immune strength, so identical clinical observations may not have the same meaning across groups. Recognizing this variation supports more informed interpretation of disease patterns and helps clinical research account for developmental and immunological differences.