<prompt> tafadhali geuza maudhui haya ya swahili kwenda kwa kiingereza.zaidi ya dozi elfu 300 za az zililazimika kuharibiwa wakati zilipomalizika muda wa matumizi juni na julai iliyopita.  <response>: more than 300,000 doses of the astrazeneca vaccines had to be disposed of when they expired last june and july. 