<prompt> Translate the following text to SwahiliThus, in a case study design, an instance may be selected because it is a unique event of national interest, such as the Cuban missile crisis or the distribution of the swine flu vaccine, both subjects of research case studies.  <response>: Kwa hivyo, katika muundo wa utafiti wa kesi, mfano unaweza kuchaguliwa kwa sababu ni tukio la kipekee la maslahi ya kitaifa, kama vile mgogoro wa makombora ya Cuba au usambazaji wa chanjo ya mafua ya nguruwe, wote wawili ni masomo ya utafiti wa kesi. 