Translations:Advanced Field Epi:Manual 1 - Disease Investigation/388/en
Example: [cattle and Johne's disease or paratuberculosis] is different to [cattle and (Johne's disease or paratuberculosis)]. The first statement will retrieve all resources for Johne's disease in cattle or paratuberculosis in any species, while the second returns only resources relating to Johne's disease in cattle or paratuberculosis in cattle.