translation.en: Pneumococci are the main cause of bacterial respiratory tract infections, such as pneumonia, middle ear infection, and sinusitis, in all age groups.
translation.mt: Pneumococci huma l-kawża ewlenija ta' infezzjonijiet tal-apparat respiratorju batterjali, bħal pnewmonja, infezzjoni tal-widna tan-nofs, u sinożite, fl-etajiet kollha.