The BiPAP-masked patient… shouted through a positive pressure of 18/8 cm, “do you know why ants don’t get sick?” “No, I don’t. Why?” And through a positive pressure-enhanced smile, the patient answered, “because they have anty-bodies!” Then she laughed upstream against the onrushing BiPAP airflow. …My laughing choked off as I watched her oxygen saturation drop from a very low 87%, to a really, really low 84%, to a breathtakingly low 81%.   — Michael A. Salvatore, MD, physician advisor and medical director of the palliative care team at Beebe Healthcare in Delaware, writing on MedLearn Media's Frontline Friday   When longtime SIPA member MedLearn Media decided to call one of their pandemic features Frontline Friday, it was for good reason. These first-person dispatches from nurses, doctors and hospital personnel are searing to read.   ...