during mating sperm can enter only if barriers (contraceptive methods) are not used than in this case how they prevent diseases like AIDS etc ,,

Solution:

AIDS(Acquired immune deficiency syndrome or acquired immunodeficiency syndrome) can be described as the disease caused by a virus called HIV(Human Immunodeficiency Virus). The illness alters the immune system, making people much more vulnerable to infections and diseases. This susceptibility worsens as the disease progresses. The HIV is transmitted from one body to another through body fluids such as blood, semen, saliva, vaginal fluid, breast milk and more.

AIDS can be transmitted through sexual intercourse, used syringes for injections,  blood transfusion, multiple sexual partners. AIDS is transmitted majorly through sexual intercourse as the fluids (semen and vaginal secretions) are exchanged during the intercourse. If a person use barriers (condoms) the entry of fluids can be avoided and hence the disease can be prevented.


 

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