<prompt> tafsiri zifuatazo kutoka kwa swahili hadi kiingereza.boko haram imewaua takriban watu 20,000, kupelekea kiasi ya wengine milioni 2.6 kuyatoroka makaazi yao na kusababisha janga la kibinadamu kaskazini mwa nigeria na katika nchi jirani za cameroon, niger na chad.  <response>: boko haram attacks have killed more than 20,000 people and displaced 2.7 million in northeast nigeria and adjacent areas of chad, niger and cameroon. 