Is there an authentic increased risk of pneumococcal pneumonia among young mothers whose children were fully vaccinated with PCV7? The role of methodological shortcomings

Is there an authentic increased risk of pneumococcal pneumonia among young mothers whose children were fully vaccinated with PCV7? The role of methodological shortcomings / Castiglia, Paolo Giuseppino; Piana, Andrea Fausto; Sotgiu, Giovanni. - In: VACCINE. - ISSN 0264-410X. - 31:33(2013), pp. 3361-3362. [10.1016/j.vaccine.2013.05.055]