Additionally, factors other than a fear of the contagion can contribute to the reluctance to treat a particular patient. Some physicians and dentists express concern that if it is discovered that they treat patients with AIDS, then those patients who don't have HIV may shun their practice. Still, other physicians insist they do not know enough about HIV infection and are too busy to learn [14] . Another reason for which a physician may refuse to treat HIV-positive patients is that the physician feels they have a duty to protect their other patients, basing their reasoning on the principle of "First do not harm". By treating HIV-positive patients they claim that they may potentially be putting their other patients at risk for infection [15] . Furthermore, as has been reported, there is always the possibility that when a HCW is able to reject the patient based on a more benign excuse, for example if the patient does not have enough money, it is even easier, and all the more likely, for treatment to be refused, even though this refusal was done in the interest of protecting the physical health of the individual health care provider [14] .