https://phys.org/news/2018-07-nanofiber-based-wound-production-antimicrobial-peptide.html > Each year in the U.S. alone, nearly 300,000 surgical patients develop an infection within 30 days of their operation—accounting for an estimated $10 billion in additional healthcare costs—and more than 13,000 of those people die. > Researchers used electrospinning to prepare dressings containing the bioactive form of vitamin D: 1,25-dihydroxyvitamin D3, or 1,25(OH)2D3.