"The healthcare crisis been exacerbated by the blockade as well as three devastating wars since 2008. The World Health Organization says there is a chronic shortage of pharmaceutical supplies and medicine in Gaza, with patients in need of tertiary care prevented from traveling from the territory due to the blockade, which Egypt maintains in Gaza's south. Meanwhile, Israel's military offensive on Gaza last summer damaged or destroyed 17 out of 32 hospitals as well as 50 out of 97 primary health centers, according to a UN Office for the Coordination of Human Affairs report last September."