Top 10 Most Famous Cultural Monuments Around the World. 1. The Kaaba (Masjid al-Haram) is a cuboid-shaped building in Mecca, Saudi Arabia, and is the most sacred site in Islam, oldest and top the most Famous Cultural monuments in the world.
STD's are diseases caused by bacteria or viruses. AIDS is a syndrome caused by having HIV, which is a type of STD. So HIV is the STD, AIDS is a very very late symptom.
Sexually transmitted infections (STI), also referred to as sexually transmitted diseases (STD) and venereal diseases (VD), are infections that are commonly spread by sex, especially vaginal intercourse, anal sex and oral sex.ecent epidemiological studies have investigated the networks that are defined by sexual relationships between individuals, and discovered that the properties of sexual networks are crucial to the spread of sexually transmitted diseases.