Dịch bắn vào vết trầy

[bivn12]

"If fresh contaminated blood enters the bloodstream then definitely it is considered HIV infection. However, this usually does not happen because it is a rare scenario that a profusely bleeding HIV positive person's blood would come in contact with a deep, fresh, bleeding wound of a healthy person. A small bleeding cut does not provide direct access because the bleeding capillaries constrict as soon as they were traumatized.
Moreover, the blood is flowing out of the vessel. So, unless it is a large bleeding wound and fairly large contamination occurs with the virus infected blood, the virus cannot get into the bloodstream"

Đọc thêm đoạn và này và đoạn trên bạn sẽ hiểu tại sao, sorry, ko có time dịch ra...tiếng Việt, bạn google translate nếu cần

Dạ em đọc hiểu sơ sơ ạ. Bài này hay quá anh cho em xin nguồn dc ko ạ?