Constructing vaccination slogans in the late stage of vaccine launch: an experimental study based on the framing effect theory

Vaccination is an important strategy for overcoming public health crises. Considerable studies have analyzed strategies to promote people's willingness to vaccinate, but few have explored effective strategies based on the stage of vaccine launch. This study considered the framing effect theory to explore whether egoism, altruism and loss frames can boost vaccination willingness when people feel the vaccine is effective in the late stage of vaccine launch.