Animal rights group PETA claims vegetarians and vegans weigh less than meat eaters and have a reduced risk of diseases such as cancer, heart disease, diabetes and strokes.

Pneumococcal diseases are caused by a common bacterium called Streptococcus pneumoniae (the pneumococcus). The pneumococcus bacterium has approximately 90 known serotypes, only some of which commonly cause disease. Eleven serotypes are responsible for most of the disease in infants across the globe, with seven serotypes accounting for the majority of diseases in developed countries. The...