By , CNNLink Copied!Ad FeedbackVideo Ad FeedbackThousands of Americans could have this allergy. Many doctors have not heard of it — Ken McCullick died in an emergency room on August 12, 2021.“I got lucky and there was this young nurse … I was one of her first CPR patients, and she would not give would not give up and saved my life.DieterMeyrl/iStockphoto/Getty Images“I’m grateful for that,” McCullick said, his voice choked with emotion at the memory.The 66-year-old musician from Brooksville, Florida, said his heart stopped after he got the blood thinner heparin in the...…By , CNNLink Copied!Ad FeedbackVideo Ad FeedbackThousands of Americans could have this allergy. Many doctors have not heard of it — Ken McCullick died in an emergency room on August 12, 2021.“I got lucky and there was this young nurse … I was one of her first CPR patients, and she would not give would not give up and saved my life.DieterMeyrl/iStockphoto/Getty Images“I’m grateful for that,” McCullick said, his voice choked with emotion at the memory.The 66-year-old musician from Brooksville, Florida, said his heart stopped after he got the blood thinner heparin in the...WW…

MedscapeUnivadisEnglish EditionMedscapeUnivadisXPlease confirm that you would like to log out of Medscape.If you log out, you will be required to enter your username and password the next time you visit.>Editor's note: Find the latest COVID-19 news and guidance in Medscape'sA 25-year-old man from Nevada and a 42-year-old man in Virginia experienced second bouts of COVID-19 about 2 months after they tested positive the first time. Gene tests show both men  had two slightly different strains of the virus, suggesting that they  caught the infection twice. Researchers say...…MedscapeUnivadisEnglish EditionMedscapeUnivadisXPlease confirm that you would like to log out of Medscape.If you log out, you will be required to enter your username and password the next time you visit.>Editor's note: Find the latest COVID-19 news and guidance in Medscape'sA 25-year-old man from Nevada and a 42-year-old man in Virginia experienced second bouts of COVID-19 about 2 months after they tested positive the first time. Gene tests show both men  had two slightly different strains of the virus, suggesting that they  caught the infection twice. Researchers say...WW…