CBS St. Louis: Moderna Says Third COVID Vaccine Booster Shot ‘Likely To Be Necessary’ This Fall Due To Delta Variant

CAMBRIDGE (CBS) – Moderna says a third booster dose of its COVID-19 vaccine will likely be necessary this fall because of the rapid spread of the Delta variant of the coronavirus.

“We believe that increased force of infection resulting from Delta, non-pharmaceutical intervention (NPI) fatigue, and seasonal effects (moving indoors) will lead to an increase of breakthrough infections in vaccinated individuals,” the Cambridge-based company said in a presentation on earnings released Thursday.

In a separate announcement Thursday, Moderna said its