Efficacy of 13-valent polysaccharide conjugate vaccine (PCV13) against Pneumococcal Pneumonia in Adults

http://www.nejm.org/doi/full/10.1056/NEJMoa1408544

CONCLUSIONS

Among older adults, PCV13 was effective in preventing vaccine-type pneumococcal, bacteremic, and nonbacteremic community-acquired pneumonia and vaccine-type invasive pneumococcal disease but not in preventing community-acquired pneumonia from any cause.