Mattel has announced the release of six very special Barbie dolls, modeled after real-life frontline workers who have had a major, positive impact on the fight against COVID-19. As Mental Floss reports, the dolls honor "Amy O’Sullivan, a New York emergency room nurse who treated Brooklyn’s first COVID-19 patient, contracted the virus herself, and continued to care for patients after a harrowing recovery; Dr. Audrey Sue Cruz, a Las Vegas doctor who’s  used her social media platform to combat disinformation and racism against the AAPI population; Dr. Chika Stacy Oriuwa, a University of Toronto psychiatry resident raising awareness about  systemic racism in healthcare; vaccinology professor Sarah Gilbert, who spearheaded the creation of the University of Oxford’s vaccine; Dr. Jaqueline Goes de Jesus, a Brazilian biomedical researcher who, with others, sequenced the genome of a COVID-19 variant; and Dr. Kirby White, an Australian doctor who helped invent a washable surgical gown during the PPE shortage." Head over to Mental Floss to learn more about these special Barbies.