Questions with the keyword 'vaccine'

• why cant we make vaccines for all infections by bethany bob to Andy, Duane, Giovanna, Katie, Theresia Comments: (No comments so far )
• why is there a flu vaccine. have you had it? by R2D2 to Andy, Duane, Giovanna, Katie, Theresia Comments: (No comments so far )
• how do vaccines work? by FlossyFoster to Andy, Duane, Giovanna, Katie, Theresia Comments: (No comments so far )