Abstract
Randomised trials carried out over two decades ago showed that the polysaccharide vaccine prevented serogroup A meningococcal meningitis. Subsequent non-randomised studies, however, suggested signi cant variations in the age-speci c duration of protection among young children.
| Original language | English |
|---|---|
| Pages (from-to) | 1-27pp |
| Journal | Cochrane Database of Systematic Reviews (CDSR) |
| Volume | 2007 |
| Issue number | 2 |
| Publication status | Published - 2007 |