Final answer:
In health care, blood borne diseases are most commonly transmitted through contact with infected body fluids such as blood, during activities like needle-stick injuries, needle sharing, sexual activities, and transfusion of contaminated blood products.
Step-by-step explanation:
In health care, the most common way to be infected by a blood borne disease is through contact with infected body fluids, such as blood, semen, or saliva. This type of transmission can occur via various means, including needle-stick injuries among health-care workers, sharing needles during intravenous drug use, sexual transmission, and transfusion of contaminated blood or blood products. Health-care workers need to take appropriate precautions, such as wearing gloves and face protection, to prevent infection by diseases like HIV and hepatitis B, which can be transmitted through these fluids.
Transmission through contaminated blood is particularly a concern in areas with less rigorous screening processes for blood donations, making it a significant mode of transmission in poorer regions. Medical injections with unsterilized equipment and invasive medical procedures can also contribute to the risk. Preventive practices such as the use of disposable syringes and needles, post-exposure treatments, and proper sterilization procedures are essential in reducing the risk of infection.