HIV, who responsibility?

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HIV, stand for human immunodeficancy virus, which attack our DNA when it get into our body. It change it sign into AIDs,stand for Acquired Immuno Deficancy Virus, which which destroy our immunity, exposing us to the deadly diseases.Until now, there is no treatment and vaccine can control it. Many people dies throughout the years, with an increasing of the trend. Who is responsible for this increasing number of infectious people? Why people in the world can not took aware with this deadly virus? Aren't they educated with it's dangerous?