This reply is to dedicate for ppls who thinking of having sex in
casual way (No intention to reply Ding's msg):
--------------------------------------------------------------------------------------------------
Anyone, anywhere, of any age, race, sex or sexual orientation can
be infected, but you're at greatest risk if you:
Have unprotected sex with multiple partners.
You're at risk whether you're heterosexual, homosexual or bisexual.
Unprotected sex means having sex without using a new latex
or polyurethane condom every time.
Have unprotected sex with someone who is HIV-positive.
Have another sexually transmitted disease, such as syphilis,
herpes, chlamydia, gonorrhea or bacterial vaginosis.
Share needles during intravenous drug use.
How Aids
developed
Normally, white blood cells and antibodies attack and destroy
foreign organisms that enter your body. This response is
coordinated by white blood cells known as CD4 lymphocytes.
Unfortunately, these lymphocytes are also the main targets of HIV,
which attaches to the cells and then enters them. Once inside, the
virus inserts its own genetic material into the CD4 lymphocytes and
uses the material to make copies of itself.
When the new copies of the virus break out of the host cells and
enter your bloodstream, they search for other cells to attack. In
the meantime, the old host cells die. The cycle repeats itself
again and again. In the process, more than 10 billion new HIV
particles are produced every day. To counter this huge virus
production, your immune system turns out as many as 2 billion new
CD4 cells daily.
Eventually, however, the virus wins this race. The number of CD4
cells in your body progressively decreases, and you develop severe
immune deficiency, which means your body can't effectively fight
off viruses and bacteria that cause disease.
