 Ramba uchinyora ndima iyi - Muna 1873 Oser akagadzwa kuva chiremba mukuru muchipatara chainge chichangovhurwa chenzanga yorudzidziso yechiIsraeri, icho akatungamirira kusvikira parufu rwake. Mugore iroro akapedza Habilitation yake. MuVienna, korera yakatanga nemhaka yenhamba huru yevashanyi kuWorlds Fair ya1873uye gadziriro yetsvina isina kukwana. Naizvozvo kwakanga kusiri tsaona kuti Oser akaita basa rokupayona mumunda wokurapa cholera. Muna 1874 akava nhengo yeLow Austrian State Medical Council uye kubva muna 1905 sachigaro wayo. Muna 1885 akava purofesa wezvokurapa zvemukati paMedical University yeVienna uye muna 1902 akagamuchira purofesa o. Univ.-Prof. ane zita rokuti Ordinarius. 