Hamilton et al. (29) also recently identified that infection-associated (compared with idiopathic) PTL is associated with a distinct chemokine profile in the chorio-decidua, with a general downregulation of CC chemokines and elevated expression of a number of CXC chemokines, such as CXCL1, CXCL5, and CXCL8, in infection-associated PTL. Here, CXCL1 is linked to infection.