Nurse Kathe Olmstead, right, gives volunteer Melissa Harting, of Harpersville, New York, an injection as part of a study for a possible COVID-19 vaccine developed by Moderna Therapeutics and the National Institutes of Health and Moderna Inc., on July 27, 2020 in Binghamton, New York.

Original Article Source Credits:   National Geographic , https://www.nationalgeographic.com/

Article Written By:  AMY MCKEEVER

Original Article Posted on:  SEPTEMBER 9, 2020

Link to Original Article:  https://www.nationalgeographic.com/science/health-and-human-body/human-diseases/coronavirus-vaccine-tracker-how-they-work-latest-developments-cvd/