Moderna says its COVID-19 vaccine 93% effective after 6 months. A final analysis of late-stage trial data indicated Moderna’s COVID-19 vaccine was 93% effective 6 months after the second dose, the company announced Thursday. "We are pleased that our COVID-19 vaccine is showing durable efficacy of 93% through six months, but recognize that the Delta variant is a significant new threat so we must remain vigilant," Stéphane Bancel, CEO of Moderna, said in part in a company announcement posted Thursday. The company also said it expects to complete a submission for full approval of its COVID-19 vaccine in August, and has finished enrollment for a study exploring a refrigerator-stable vaccine that could potentially ease distribution and storage. Check out the link to read more about this.