HIV is transmitted through how many of the following?
(1) Sexual contact
(2) Blood transfusion
(3) Sharing needles
(4) Placenta

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One

Three

Two

Four

answer is D.

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Detailed Solution

HIV can be transmitted in the following ways:

Sexual contact - HIV is spread most commonly by sexual contact with an infected partner. The virus enters the body through the lining of the vagina, vulva, penis, rectum, or mouth during sexual activity.
Blood contamination - HIV may also be spread through contact with infected blood. However, due to the screening of blood for evidence of HIV infection, the risk of acquiring HIV from blood transfusions is extremely low.
Needles - HIV is frequently spread by sharing needles, syringes, or drug use equipment with someone who is infected with the virus. Transmission from patient to healthcare worker, or vice-versa through accidental sticks with contaminated needles or other medical instruments, is rare.
Mother-infant - HIV also can be spread to babies born to, or breastfed by, mothers infected with the virus.

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