The video explains how viruses are encountered in daily life and the factors that increase exposure. It details virus transmission, including shedding, generation time, and incubation period. The molecular level of transmission is discussed, focusing on viral envelopes and non-enveloped viruses. Various transmission routes, such as respiratory and fecal-oral, are covered, along with horizontal and vertical transmission. The video concludes with the concept of virus maintenance in populations and the definition of epidemics.

Which of the following environments is most likely to increase exposure to viruses?

• A private office

• A secluded forest

• A crowded living space

• A deserted island

What is the term used to describe the spread of a virus to another organism?

• Infection

• Transmission

• Shedding

• Incubation

What is the primary determinant for the mode of viral transmission at the molecular level?

• The size of the virus

• The shape of the virus

• The presence or absence of a viral envelope

• The color of the virus

Which type of virus can withstand extreme pH and detergents?

• Enveloped viruses

• Non-enveloped viruses

• RNA viruses

• DNA viruses

What is the term for viral diseases shared by humans and animals?

• Zoonoses

• Bacteriophages

• Mycoses

• Arboviruses

How is vertical transmission of a virus defined?

• Transmission from one individual to another non-related individual

• Transmission from parent to offspring

• Transmission through contaminated surfaces

• Transmission through respiratory droplets

What is the term used to describe the ability of a virus to persist in a community?

• Maintenance

• Incubation

• Shedding

• Amplification