What single group was the aids virus thought to affect? what was determined later about how someone can contract aids?

Aids is a virus that originated within the homosexual group. The first origin of HIV is debated, however one of the most common theories suggests that HIV began in the Congo, when a homosexual man has bestality sex with a primate (baboon) which carried SIV (similar to the human form: HIV).

This theory is debated, however I personally believe it. There are many solid and factual studies that support this theory.  

the ecg findings of an acute anterior myocardial infarction wall include: st segment elevation in the anterior leads (v3 and v4) at the j point and sometimes in the septal or lateral leads, depending on the extent of the mi. this st segment elevation is concave downward and frequently overwhelms the t wave.

explanation: