Like a tornado through his body
Mark Ivanisin, a U.S. Army Corps of Engineers Pittsburgh District operations supervisor for navigation on the Allegheny River, poses for a portrait in his home in Pittsburgh, Dec. 17, 2021. Earlier this year, Ivanisin spent 52 days in the hospital fighting for his life against the COVID-19 virus and the pneumonia that followed. “If my immune system hadn’t already received a boost from the vaccination, I probably wouldn’t have survived. That was based on what (doctors) saw from other patients coming in. That’s probably the one thing that helped me get through this,” Ivanisin said. (U.S. Army Corps of Engineers Pittsburgh District photo by Michel Sauret)

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Photo by: Michel Sauret |  VIRIN: 211217-A-TI382-0996.JPG