**Human Virome**
**Definition**
The human virome refers to the collection of all viruses that inhabit the human body, including those that infect human cells, bacteria (bacteriophages), and other microorganisms. It is a dynamic component of the human microbiome and plays a significant role in health and disease.
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### Overview of the Human Virome
The human virome encompasses a diverse array of viruses present in various tissues and bodily fluids, such as the gut, skin, respiratory tract, and blood. Unlike pathogenic viruses that cause disease, many viruses in the virome exist in a commensal or latent state, contributing to the ecological balance of the human microbiome.
### Composition and Diversity
The virome includes eukaryotic viruses that infect human cells and bacteriophages that target bacterial populations within the body. Bacteriophages are particularly abundant in the gut, influencing bacterial diversity and function. The composition of the virome varies between individuals and can be influenced by factors such as age, diet, environment, and health status.
### Role in Health and Disease
Research suggests that the human virome plays a role in immune system development and regulation. Some viruses may protect against bacterial infections by controlling bacterial populations, while others can contribute to disease when viral balance is disrupted. Understanding the virome is important for insights into chronic diseases, immune disorders, and potential therapeutic interventions.
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**Meta Description:**
The human virome is the collection of viruses inhabiting the human body, including those infecting human cells and bacteria. It influences health, immunity, and disease through complex interactions within the microbiome.