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. Fecal-oral transmission, e.g., someone not washing hands properly after using the toilet. Airborne: ________ (Answer: Sneezing) ________ (Answer: Coughing)

• 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.

Virus: H.I.V.

How is this disease transmitted to humans?

• H.I.V. is transmitted through casual contact like hugging.
• H.I.V. is transmitted by consuming contaminated food.
• H.I.V. is transmitted to humans through contact with infected bodily fluids.

Virus: H.I.V.

How does the virus enter the body?

• H.I.V. is transmitted via insect bites.
• H.I.V. can be contracted by sharing food.
• H.I.V. enters the body through contact with infected bodily fluids.

Virus: H.I.V.

What are the symptoms of the viral disease?

• Skin rashes and itching
• Headaches and dizziness
• fever, fatigue, swollen lymph nodes, sore throat, weight loss, recurrent fever, night sweats, and prolonged fatigue.

• Nausea and vomiting

Virus: Chickenpox.

How is the disease transmitted to humans?

• Through respiratory droplets and direct contact with blister fluid.
• By insect bites or stings.
• Through contaminated food and water.

Virus: Chickenpox.

How does the virus enter the body?

• Through the respiratory tract via inhalation of infected droplets.
• By consuming contaminated food or water.
• Via insect bites from infected mosquitoes.

Virus: Chickenpox.

What are the symptoms of the viral disease?

• itchy rash, fever, fatigue, loss of appetite, and headache.

• Cough and runny nose
• Nausea and vomiting
• Joint pain and swelling