Kwalara cuta ce da ke sa gudawa wanda ke faruwa ta cin abinci ko shan ruwa gurɓataccen mai ɗauke da kwayar cutar. Wannan karatun yana ba da gabatarwar gaba ɗaya game da kwalara kuma an tsara shi ne don ma'aikatan da suke bada taimako a lokacin ɓarkewa a cikin gaggawa mai tsanani ko cikin saitunan inda aka lalata ko rushe asalin gine-ginen muhalli.
**A lura: An samar da wannan kwas a 2017. Don sababbin abubuwa, a duba batutuwan kiwon lafiya da suka dace a kan Shafin yanar gizon WHO.