Monitoring the long-term molecular epidemiology of the pneumococcus and detection of potential 'vaccine escape' strains. oleh Gagan A Pandya, M Catherine McEllistrem, Pratap Venepally, Michael H Holmes, Behnam Jarrahi, Ravi Sanka, Jia Liu, Svetlana A Karamycheva, Yun Bai, Robert D Fleischmann, Scott N Peterson