0%. HIV cannot penetrate intact skin. HIV is only transmitted by fluid-to-fluid contact with infected blood, semen, vaginal fluid or breast milk.

After a body has been lying around for a few days, it will start to decompose. So at that stage, it would appear that fluid was coming out of the skin.

the fluid secreted by the sweat glands is called

Yes it does. Loss of interstitial fluid is the same thing as dehydration. And that loss of fluid makes the skin less elastic, when you pinch it, it does not spring back as quickly.

dry skin,poor skin turgor,sunken eyeball etc..