Question
What is the sequence for meningococcal vaccination? If a child has already received the Meningococcal AC combined vaccine, do they still need to get booster shots at the ages of 3 and 6?
Answer
The Meningococcal AC combined vaccine and the Meningococcal AC polysaccharide vaccine differ in their immune response. The polysaccharide vaccine was commonly used in the past, but it was not very effective for children under 2 years old. Now, there is the Meningococcal AC combined vaccine, which combines protein components for a better effect. For children who have already received the Meningococcal AC combined vaccine, booster shots are still necessary at the ages of 3 and 6, and it is recommended to choose the polysaccharide vaccine. This is because children at this age have a more mature immune system, which can produce a good immune response to polysaccharide vaccines. Additionally, choosing the polysaccharide vaccine can help avoid potential adverse reactions.