booster dose

noun 0.889

booster shot

noun 0.888

booster

noun 0.860

injection

noun 0.680

boosting

noun 0.672

reinjection

noun 0.631

injectable

noun 0.625

boost

noun 0.617

shot in the arm

noun 0.609

vaccination

noun 0.600

postinjection

noun 0.593

booster club

noun 0.586

immunization

noun 0.556

boosterism

noun 0.555

bolstering

noun 0.546

injector

noun 0.545

flu shot

noun 0.542

immunostimulant

noun 0.539

fuel injection

noun 0.513

microinjection

noun 0.510

bolster

noun 0.507

lethal injection

noun 0.506

coinjection

noun 0.505

immunostimulation

noun 0.503

vaccinator

noun 0.503