… hadn’t even had my coffee yet,” he recalled—from the Cambridge-based biotechnology company Moderna about participating in its Phase-3, placebo-controlled, double-blind … his mother, who has a PhD in pathology, used to work at Pfizer, a second U.S. company on the cusp of having its coronavirus vaccine approved in the United States … hadn’t even had my coffee yet,” he recalled—from the Cambridge-based biotechnology company Moderna about participating in its Phase-3, placebo-controlled, double-blind …