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Pneumococcal vaccination may not work in adults

Pneumococcal vaccination may not be effective in adults, even in populations for whom the vaccine is recommended, says a new analysis.

The meta-analysis by UK and Swiss researchers looked at 22 trials of pneumococcal vaccine in 101,500 participants and found little evidence for protection among elderly patients or adults with chronic illness.

They found a non-significant 4% increase in the risk of presumptive pneumococcal pneumonia and concluded that policy makers may wish to reconsider any recommendations for routine use of the vaccine in at-risk populations.

Efficacy of pneumococcal vaccination in adults: a meta-analysis

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