Merck traditionally has been a leader in vaccines but has not had success with a COVID-19 vaccine. It's lending a hand to Johnson & Johnson, where production is running significantly behind schedule.
Copyright 2021 NPR
Merck traditionally has been a leader in vaccines but has not had success with a COVID-19 vaccine. It's lending a hand to Johnson & Johnson, where production is running significantly behind schedule.
Copyright 2021 NPR