There are several ways to spread AIDS. Will kissing spread AIDS?

AIDS, also known as acquired immunodeficiency syndrome (AIDS), is an infectious disease caused by human immunodeficiency virus (HIV) infection, mainly through sexual behavior, blood contact or mother-to-child contact. After infection with HIV, the immune function of the human body will be suppressed, which can easily lead to virus infection and tumor. Human infection with HIV will cause T lymphocyte damage, lead to persistent immunodeficiency, opportunistic infection in many organs and rare malignant tumors, and finally lead to death.

How does AIDS come into being

Two kinds of glycoproteins, gp120 and gp41, are embedded in the lipoprotein envelope of HIV in vitro. Gp120 has affinity with CD4 glycoprotein on the surface of lymphocytes and can specifically bind to it. Gp41 mediates the fusion of virus envelope and host cell membrane. Therefore, HIV can selectively invade CD4+ lymphocytes after reaching the blood through skin and mucous membrane damage or other pathways such as blood.

After HIV invades CD4+ lymphocytes, under the action of viral reverse transcriptase adult toys for men , DNA is synthesized and integrated into the chromosomes of host cells. The integrated viral DNA can replicate in the cell, form a complete virion and release outside the cell chastity device , die, infect new cells, or show latent infection, and enter the offspring cells with cell division.

At the initial stage of infection, HIV replicated in large quantities, resulting in viremia and the expression of capsid antigen p24. The clinical manifestation was acute HIV infection. Due to the large number of intracellular replication of HIV chastity device , CD4+ lymphocytes were damaged and died, and CD4+T cells decreased significantly. However, under the immune action of the body, CD8+CTL is activated to kill HIV infected cells and produce anti-HIV antibodies at the same time, viremia is quickly cleared and the number of CD4+ lymphocytes increases.

There are several ways of transmission of AIDS.

HIV exists in infected people's blood, semen, vaginal secretions, tears, urine, milk and cerebrospinal fluid. AIDS patients and HIV carriers are infectious, mainly transmitted through sexual contact, followed by blood transmission, such as drug users, blood or blood products infected with HIV, contact with blood and mucus of HIV infected people, etc.

1. Sexual transmission: HIV can be transmitted through sexual intercourse. Genitals with sexually transmitted diseases (such as syphilis, gonorrhea, condyloma acuminatum) or ulcers can increase the risk of infection. HIV infected people's semen or vaginal secretions have a large number of virus, through anal sexual intercourse, vaginal intercourse, will spread the virus. The probability of oral sex transmission is relatively small, unless the healthy party has a wound in the mouth, or ruptured, HIV may be transmitted through blood or semen.

2. Blood transmission:

(1) Blood transfusion transmission: if there is HIV in the blood, the person who enters the blood will be infected.

(2) Blood product transmission: some patients (such as hemophiliacs) need to be injected with biological products made from certain components raised in the blood.

(3) other: dental surgery, fighting, sharing toothbrushes, razors, bleeding industries such as hardware cutting, in fact, it is easy to spread AIDS through blood.

3, needle sharing transmission: the use of dirty needles can make HIV transmission from one person to another, such as intravenous drug users sharing needles; repeated use of needles in hospitals, drips, and so on.

4. Mother-to-child transmission: if the mother is infected with AIDS, she is likely to infect her child during pregnancy, childbirth or through breastfeeding. However, if the mother during pregnancy, take anti-AIDS drugs, the baby's risk of HIV infection will be much lower, or even completely healthy.

Does kissing spread AIDS?

Does saliva spread AIDS? Generally speaking, kissing does not spread AIDS. HIV exists in infected people's blood, semen, vaginal secretions, tears, urine, milk, cerebrospinal fluid, the content in saliva is very small, will not lead to human infection with the virus. It has been calculated that under normal circumstances (there is no massive bleeding in the mouth), only the HIV virus contained in saliva requires two gallons (7.5L) of saliva to enter the other person's body in order to achieve the effect of HIV infection. And, so far, the scientific community has found no cases of infection just by kissing.

But it should be noted that saliva HIV virus content, refers to people without oral health problems, if gingival disease caused gum bleeding or oral ulcers, then kissing AIDS risk will be increased to varying degrees.
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