Kusan jarirai miliyan daya ne suke mutuwa a kowace shekara, bisa dalilan da suka shafi yanayin haihuwarsu bakwanni, kana, an gano cewa babu wani saukin da aka samu game da lamarin a fadin duniya baki daya cikin shekaru goma da suke wuce daga shekara to 2010 zuwa 2020.