Section quiz

Platelets
Lymphocytes
RNA
CD4+ cells

Correct Answer: CD4+ cells
CD4+ are the cells that HIV attacks.

From mother to infant during pregnancy
Through blood transfusions
Through insect bites
Through sexual activity
By donating blood
Through contact with sweat
Through injection drug use
Through contact with animals

Correct Answer: Through insect bites, By donating blood, Through contact with sweat, and Through contact with animals
HIV cannot be transmitted through insect bites, by donating blood, through contact with sweat, and through contact with animals. HIV is not transmitted through routine casual contact. It can be transmitted through sexual activity, injection drug use, other activities in which skin is pierced, from an infected mother to child, through blood transfusions, transplants, artificial insemination, or other contact with mucous membranes.

Saliva
Breast milk
Anal secretions
Blood
Vaginal secretions
Tears
Semen
Sweat
Urine

Correct Answer: Breast milk, Blood, Vaginal, and Semen
HIV is found in high concentration in blood, semen, vaginal secretion, and breast milk. It is found in very low concentration, or is absent from saliva, sweat, tears, and urine. It is found in medium concentration in anal secretions.

Less than 1%
5%–10%
15%–20%
More than 20%

Correct Answer: 5%–10%
Injection drug use accounts for only 5%–10% of worldwide HIV infections since the beginning of the HIV/AIDS epidemic. However, in some parts of the world, it is the major mode of HIV transmission.

Less than 10%
15%–25%
35%–45%
55%–65%

Correct Answer: 15%–25%
Without intervention, the risk of transmission from an HIV+ mother to her child before or during birth is 15%–25%. Breastfeeding by an HIV+ mother raises the risk by 5%–20%, to a total risk of 20–45%.

True
False

Correct Answer: True
This statement is true for developed countries since they began screening all donated blood for HIV antibodies. Outside of developed countries, however, blood safety is not as predictably guaranteed.

True
False

Correct Answer: False
As of 2003, there has been only one documented case of a healthcare worker giving HIV to patients.