Zoyeretsa mpweya zakhala gawo lofunikira pakuwongolera mpweya wabwino m'nyumba, makamaka m'nyumba, m'sukulu, ndi m'maofesi momwe anthu amathera nthawi yawo yambiri.Mabakiteriya ndi ma virus, kuphatikiza kachilombo ka fuluwenza, amatha kukhala ndi moyo ndikufalikira kudzera ...
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