PCLAF and Lassa fever: Other PAFs or PAF-like molecules, including PAF7 (PC(O-18:2(9Z,12Z)/2:0) Na+, m/z 570.3463) and PAF12 (PC(O-14:0/2:0) Na+, m/z 613.3223) distinguished acute Lassa fever patients (fatal plus nonfatal) from patients with prior LASV infection (Acute and non-acute presentations, Fig 5D).