Tuesday, September 6, 2011

STD O/L Biology


Sexually transmitted infections
Sexually transmitted infections are those diseases that can get transmitted from one person to another as a result of sexual conduct between two persons.
Not only sexual conduct but also the following factors are influence to spread those diseases.
1.blood transfusions
2.by stringes and neetles
3.by shaving blades and surgical instruments
4.through a infected mother

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