Viral Transmission in Humans

Direct person to person contact can occur when an infectious person touches or exchanges fluids with another. Which of the following is a form of person to person contact? (Select Two)

• Touching

• Exchanging fluids

• Watching

• Listening

Indirect transmission occurs when an infected person infects another without having direct contact with that person. One example is Fecal-oral transmission, when someone is not washing hands properly after using the toilet. What is another example of indirect or airborne transmission?

• Sneezing, Coughing

• Touching, Hugging

• Eating, Drinking

• Kissing, Handshaking

Why can disease spread quickly in congested human cities?

• Disease can spread quickly due to high population density and close contact.
• People in cities have better hygiene practices.
• Urban areas have more healthcare facilities available.

Tags

NGSS.HS-LS2-7

Why would transmission by direct touch be slower than transmission by coughing or sneezing?

• Because breathing and speaking occur more frequently than coughs and sneezes

• Direct touch is a more common method of transmission.
• Transmission by coughing or sneezing is faster than by direct touch.

The virus, HIV, enters the body through contact with infected bodily fluids. This is a type of which transmission?

• Airborne like droplets or body fluids

• Direct Contact like touch

• Spread through fomites

Someone rubs their nose with their hand, shakes someone else’s hand, and then the second person rubs their nose, potentially transferring the virus. This is a type of which transmission?

• Airborne like droplets or body fluids

• Direct Contact like touch

• Spread through fomites

An infected person sneezes into their hand and touches a doorknob, leaving behind viral particles; a healthy person then turns that same knob and touches their nose, allowing the virus to enter their system. This is a type of which transmission?

• Airborne like droplets or body fluids

• Direct Contact like touch

• Spread through fomites

Complete the following paragraph as it relates to viral structure vs. cell structure. Drag the terms below into the correct space within the paragraph.

A ​ (a)   is basically made up of genetic material surrounded by a shell called a ​ (b)   . Viruses need a ​ (c)   cell in order to carry out their processes, unlike a ​ (d)   which does not​.

• virus
• capsid
• host
• cell
• membrane

Organize these options into the right categories

Groups:

(a) Cells

,

(b) Both

,

(c) Viruses

• Nonliving

• Reproduce on own

• Living

• Made of Protein

• Genetic Material

• Needs host cell to reproduce

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-3

NGSS.MS-LS3-1

NGSS.MS-LS3-2

Scientists are trying to prevent an epidemic of a highly contagious disease. What information should the scientists study first?

• how the disease reproduces

• the treatment of the disease

• the symptoms of the disease

• how the disease is transmitted