Who Didn’t Get a Second Shingrix Shot? Implications for Multidose COVID-19 Vaccines

As the U.S. prepares for nationwide distribution of vaccines to combat COVID-19, some are asking whether people who get the first of two doses will return to complete the series. This analysis draws on Medicare Part D prescription drug claims data for the herpes zoster vaccine Shingrix, which also requires two doses, to shed light on this potential challenge of the leading COVID-19 vaccine candidates.