Viral Infection Concepts and Terminology

The video tutorial by Professor Dave covers virus-cell interactions, focusing on basic terminology, host range, and tropism. It explains how viruses enter and spread within the body, the progression of viral diseases, and the immune system's role in controlling infections. The tutorial also discusses the factors affecting disease severity and the resolution of infections, concluding with an introduction to how viruses spread between hosts.

What is the term for an organism that supports the growth of a virus?

• Vector

• Host

• Pathogen

• Carrier

What does the term 'disease' refer to in the context of viral infections?

• A virus reproducing in a host

• An abnormal state of a host

• A virus being eliminated by the immune system

• A virus entering a host

What is the host range of a virus?

• The number of cells a virus can infect

• The types of tissues a virus can infect

• The spectrum of species susceptible to a virus

• The number of diseases a virus can cause

What is tissue tropism?

• The ability of a virus to evade the immune system

• The preference of a virus for a specific tissue

• The ability of a virus to infect multiple species

• The replication rate of a virus

What is the term for a virus that has lost its virulence factors?

• Attenuated

• Pathogenic

• Virulent

• Latent

Which of the following is the most common route of viral infection?

• Insect bites

• Mucous membranes

• Inhalation

• Skin abrasions

What is the first step in the progression of viral disease in the human body?

• Acquisition

• Replication in target tissue

• Initiation of infection

• Incubation period

During which stage does the virus amplify and potentially spread to a secondary location?

• Acquisition

• Incubation period

• Initiation of infection

• Resolution

What is immunopathology?

• A harmful immune response

• A beneficial immune response

• A virus spreading through the bloodstream

• A virus being cleared from the body

What does the term 'viremia' refer to?

• The clearance of viruses from the body

• The presence of viruses in the lymphatic system

• The transport of viruses in the blood

• The replication of viruses in the brain