Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  A shekara ta 2011, mutane miliyan 235<unk>330 a duk duniya suna fama da cutar asma, kuma kimanin mutane 250,000<unk>345,000 ke mutuwa a kowace shekara daga cutar. Adadin ya bambanta tsakanin ƙasashe tare da yaduwa tsakanin 1 da 18%. Ya fi yawa a cikin ƙasashe masu tasowa fiye da ƙasashe masu tasowa. Saboda haka mutum yana ganin ƙananan ƙididdiga a Asiya, Gabashin Turai da Afirka. A cikin ƙasashe masu tasowa ya fi yawa a cikin waɗanda ba su da wadataccen tattalin arziki yayin da akasin haka a cikin ƙasashe masu tasowa ya fi yawa a cikin masu wadata. Dalilin wadannan bambance-bambance ba a sani ba. Kasashe masu karamin karfi da matsakaicin karfi suna da fiye da kashi 80% na mace-mace. Yayin da asma ta ninka sau biyu a cikin yara maza fiye da 'yan mata, cutar asma mai tsanani tana faruwa a daidai adadin. Akasin haka, mata masu girma suna da yawan cutar asma fiye da maza kuma ya fi yawa a cikin matasa fiye da tsofaffi. A cikin yara, asma ita ce mafi yawan dalilin shigar da asibiti bayan ziyarar sashen gaggawa a Amurka a shekarar 2011. Yawan cutar asma a duniya ya karu sosai tsakanin shekarun 1960 zuwa 2008 tare da an gane shi a matsayin babbar matsalar kiwon lafiyar jama'a tun daga shekarun 1970. Yawan cutar sankara ya ragu a kasashen da suka ci gaba tun daga tsakiyar shekarun 1990s tare da karuwar kwanan nan musamman a kasashe masu tasowa. Asthma yana shafar kusan kashi 7% na yawan jama'ar Amurka da 5% na mutane a United Kingdom. Kanada, Ostiraliya da New Zealand suna da adadin kusan 14<unk>15%. Matsakaicin adadin mace-mace daga 2011 zuwa 2015 daga asma a Burtaniya ya kai kusan 50% sama da matsakaicin Tarayyar Turai kuma ya karu da kusan 5% a wannan lokacin.  Tambaya: Yaya aka san dalilan wadannan bambance-bambance?
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