To determine which scenario describes the transmission of a disease by indirect contact, let's analyze each option step by step:

1. **Person A has a cold - Person A sneezes near uninfected Person B**
- This describes direct contact transmission because the virus is spread directly from Person A to Person B through respiratory droplets.

2. **Deer has Lyme disease - tick bites deer - tick bites uninfected person**
- This describes vector-borne transmission, where the tick acts as a vector carrying the disease from the deer to the uninfected person. This is a form of indirect contact because the disease is transmitted through an intermediary (the tick).

3. **Person A has malaria - mosquito bites Person A - mosquito bites uninfected Person B**
- This also describes vector-borne transmission, where the mosquito acts as a vector carrying the disease from Person A to Person B. This is another form of indirect contact because the disease is transmitted through an intermediary (the mosquito).

4. **Person A has acne - Person A and Person B are physically intimate - Person B does not develop acne**
- This scenario does not describe disease transmission because acne is not a contagious disease that can be spread from one person to another.

Based on the analysis, the scenarios that describe the transmission of a disease by indirect contact are:

- **Deer has Lyme disease - tick bites deer - tick bites uninfected person**
- **Person A has malaria - mosquito bites Person A - mosquito bites uninfected Person B**

Both of these scenarios involve vector-borne transmission, which is a type of indirect contact.

Question

To determine which scenario describes the transmission of a disease by indirect contact, let's analyze each option step by step:

1. **Person A has a cold -> Person A sneezes near uninfected Person B**
   - This describes direct contact transmission because the virus is spread directly from Person A to Person B through respiratory droplets.

2. **Deer has Lyme disease -> tick bites deer -> tick bites uninfected person**
   - This describes vector-borne transmission, where the tick acts as a vector carrying the disease from the deer to the uninfected person. This is a form of indirect contact because the disease is transmitted through an intermediary (the tick).

3. **Person A has malaria -> mosquito bites Person A -> mosquito bites uninfected Person B**
   - This also describes vector-borne transmission, where the mosquito acts as a vector carrying the disease from Person A to Person B. This is another form of indirect contact because the disease is transmitted through an intermediary (the mosquito).

4. **Person A has acne -> Person A and Person B are physically intimate -> Person B does not develop acne**
   - This scenario does not describe disease transmission because acne is not a contagious disease that can be spread from one person to another.

Based on the analysis, the scenarios that describe the transmission of a disease by indirect contact are:

- **Deer has Lyme disease -> tick bites deer -> tick bites uninfected person**
- **Person A has malaria -> mosquito bites Person A -> mosquito bites uninfected Person B**

Both of these scenarios involve vector-borne transmission, which is a type of indirect contact.

Knowee AI · Accepted Answer