John Campbell

John Campbell. Writer: Dr. John Campbell. He is a British YouTuber and retired nurse educator known for his videos about the COVID-19 pandemic. As of December 2022, his YouTube channel had 2.6 million subscribers and over 581 million views. He holds a diploma in nursing from the University of London, a BSc in biology from the Open University, an MSc in health science from the University of Lancaster, and a...