Haifuwa (ko haifuwa) a cikin ƙananan ƙwayoyin cuta kalma ce da take magana akan duk wani tsari da ke kawar da (cire) ko kashe duk nau'ikan rayuwar ƙananan ƙwayoyin cuta, gami da ƙwayoyin cuta (kamar fungi, ƙwayoyin cuta, ƙwayoyin cuta, nau'ikan spore, da sauransu) waɗanda suke a saman, ƙunshe a cikin wani ruwa, a cikin magani, ko a cikin wani fili kamar kafofin watsa labarai na al'adun halitta. Za'a iya samun haifuwa ta hanyar amfani da haɗe-haɗe masu dacewa na zafi, sinadarai, hasken wuta, matsa lamba, da tacewa.

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Gabaɗaya, kayan aikin fiɗa da magunguna waɗanda ke shiga wani ɓangaren jiki da aka rigaya (kamar magudanar jini, ko shiga cikin fata) dole ne a haifuwa zuwa babban matakin tabbatar da haihuwa, ko SAL. Misalan irin waɗannan kayan aikin sun haɗa da fatar kan mutum, alluran hypodermic da na'urorin bugun zuciya. Wannan kuma yana da mahimmanci wajen kera magungunan parenteral.

Haifuwa a matsayin ma'anar ta ƙare duk rayuwa; yayin da tsaftar muhalli da kashe kwayoyin cuta ke ƙarewa a zaɓe da wani bangare. Dukansu tsaftar jiki da kashe kwayoyin cuta suna rage adadin ƙwayoyin cuta da aka yi niyya zuwa abin da ake la'akari da matakan "m" - matakan da ingantacciyar lafiya, cikakke, jiki zai iya magance su. Misali na wannan nau'in tsari shine Pasteurization.

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Daga cikin hanyoyin haifuwa muna da:
- Haifuwar zafi
- Haifuwar sinadarai
- Haifuwar Radiation
- Bakararre tacewa