Kwa zaka zingapo, anthu akhala akuda nkhaŵa ndi matenda amene amayamba chifukwa cha kulumidwa ndi udzudzu, kuyambira pakhungu mpaka kuyabwa, ndi matenda a dengue fever, malungo, yellow fever, filariasis, ndi encephalitis.Pa kulumidwa ndi udzudzu, nthawi zambiri timakhala ndi njira zosiyanasiyana zopewera ndi kuchiza.Art izi...
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