Lancet Global Health
Jan 2017 Volume 5 Number 1 e1-e114
http://www.thelancet.com/journals/langlo/issue/current

Articles
Indirect effects of childhood pneumococcal conjugate vaccination on invasive pneumococcal disease: a systematic review and meta-analysis
Tinevimbo Shiri, Samik Datta, Jason Madan, Alexander Tsertsvadze, Pamela Royle, Matt J Keeling, Noel D McCarthy, Stavros Petrou