[Can the vulnerability concept support the construction of knowledge in collective health care?].

The term vulnerability has been frequently used in scientific literature, especially after the 80's, in some epidemiologic studies, mainly focusing the risk perspective. The purpose of this article is to review the vulnerability concept through a systematic study of national and international circulation newspapers, to support knowledge and practices in the collective health care field. Furthermore, it indicates how this concept has been revisited in studies conducted in Brazil, mentioning issues which support the structural dimension of reality, linking them to the needs of a program for patients, health care users and their families. It is important to study the vulnerability concept due to the fact that an understanding of this concept will contribute to support the delivery of care, of collective health care including individual health care programs and health care policies.