<prompt> Translate the following text to EnglishTaasisi 23 za kimataifa, ikiwa ni pamoja na Kituo cha Utafiti wa Magonjwa Mapya ya Kuambukiza, zilikuwa zikifanya kazi ya kuunda chanjo hiyo.  <response>: Twenty three leading institutes all over the world, including the New Contagious Diseases Research Centre were busy working on the vaccines development. 