Can you please tell me what the difference is between these two vaccines: Prevnar and Menjugate (or Meningitech or NeisVac-C) and Menactra?

Prevnar is the brand name for the vaccine against a bacteria called pneumococcus. Pneumococcus is a major cause of meningitis and also caused other infections such as pneumonia. It is also the major cause of ear infections in children. Prevnar is composed of 7 separate vaccines against the 7 most common strains of pneumococcus.

Menjugate C is the brand name for the vaccine used in infants against a bacteria called meningococcus, group C. Group C strains of meningococcus cause meningitis and blood stream infections. Two other similar vaccines are available in Canada: NeissVac-C and Meningitech.

Menactra is the brand name for the new vaccine against groups A, C, Y, and W135 strains of the meningococcus. It is approved for use in children 2 years and older, adolescents, and adults.