Question: how long are pneumonia shots effective?
Answer: Younger than 2 years old: four shots (at 2 months, 4 months, 6 months, and then a booster between 12 and 15 months) 65 years old or older: two shots, which will last you the rest of your life. Between 2 and 64 years old: between one and three shots if you have certain immune system disorders or if you're a smoker.