Bungwe la zaumoyo pa dziko lonse la World Health Organisation ( WHO ) lidapatula 25 April chaka chilichonse kukhala tsiku lokumbukira nthendayi , imene imatengera kuli chete anthu ambiri , makamaka amayi oyembekezera ndi ana a mu Africa . aria Chakwera akwanitse malonjezoHRDC Masankhidwe a nduna autsa mapiri pa chigwa Malonjezo ayamba kuoneka Ndipo pamene mutu wa chaka chino