How are drug users at a greater risk for a disease that is caused by a virus, such as hepatitis?

Question

1) Some viruses are part of the impurities in the drugs that people inject with needles.
2) The viruses are not killed when needles are cleaned and can be injected into the person who uses the needle.
3) These viruses are in the air and a person who is a drug abuser is at greater risk to develop these kinds of diseases.
4) Some blood containing the virus remains in the needle and is injected in another person when needles are shared.

Answer 1

The correct answer is:

4) Some blood containing the virus remains in the needle and is injected in another person when needles are shared.

This option accurately reflects the risk associated with sharing needles among drug users. When needles are shared, any blood that contains viral infections (such as hepatitis B or C) can be transferred from one person to another, increasing the risk of transmitting these diseases.