LONDON (Reuters) - Pakistan has become the first country in South Asia to introduce a vaccine against the deadly pneumococcal disease in children, with GlaxoSmithKline's Synflorix selected for the programme. Worldwide more than 1.3 million children under the age of five are killed each year by pneumonia and in Pakistan it accounts for almost 20 percent of child deaths, according to the Global Alliance for Vaccines and Immunization (GAVI). ...