A CVS in Ipswich, Massachusetts, gave a 'limited number of patients' the wrong dose of the Moderna coronavirus vaccine on Monday Patients were given a 0.3 mililiter (mL) dose, 40% lower than the correct 0.5 mL dose recommended by CDC Doctors and the CDC say that as long a patient's first shot is a half-dose, or 0.25 mL, they will be fully protected once they receive a second dose As of Thursday, 41 million Americans - 12.5% of the population - have received one dose and 16.1 million - 4.9% of the population - are fully immunized