In consultations at health centres, the GP, the paediatrician and the nursing staff have faced, above all since the end of the XIX century and so far in the XXI century, the fact of having to attend to a numerous population formed of people uprooted from their community, without close relatives in the majority of cases, with different languages and cultures, and with a different way of understanding health and illness. This article analyses this phenomenon and aims to improve the understanding of health professionals and contribute to improving care for the immigrant patient.

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ABSTRACT. Here, we study the structure of points in a holomorphic Grassmann's submanifold where the holomorphic sectional curvature assumes its minimum and maximum.For spaces of nonnegative holomorphic sectional curvature we study the set of points on which it assumes the value zero. We show that the minimum and maximum sets of holomorphic sectional curvature are the intersections of a holomorphic Grassmann's submanifold with linear complex holomorphic subspaces of type (1, 1).Thorpe, [4], completely describes the structure of the sets of points in the Grassmann manifold of tangent 2-planes at a point where the riemannian sectional curvature assumes its minimum and maximum. In particular, for spaces of nonnegative curvature he describes the set of points in the Grassmann manifold where the riemannian sectional curvature assumes the value zero.The holomorphic sectional curvatures are invariants of the Hermitian structure weaker than the riemannian sectional curvature. The study of these invariants is very interesting as can be seen by the abundant bibliography on this subject.If M is an almost Kaehler manifold with almost complex structure 7 and m G M, then both the set of holomorphic 2-planes at m (planes invariant under 7) and the set of antiholomorphic 2-planes at m (planes P such that v GP implies Jv 1P) are intersections with the Grassmann manifold of linear subspaces of A2(V) where V = TmM is the tangent space of 717 at m. Indeed, the automorphism 7 of V induces a curvature operator, also denoted by 7, on V by J(u Au) = Ju A Jv (u, v G V) and one checks that the sectional curvature of 7 assumes its maximum value 1 on holomorphic 2-planes and its minimum value 0 on antiholomorphic 2-planes [4].In this article, proceeding in the same way as Thorpe,[4], for the real case, we describe the structure of the sets of points in a holomorphic Grassmann's submanifold

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