Vawlei pumpi huapin ngandamnak lei riantuantu phu (World Health Organisation) lutlai nih ‘zual lei kan panh’ tiin khawrawnarungrul tlangrai kong he pehtlaiin ralrin a pek. Vawleipi huapin 10.1 nuai milu tluk zawtnak an I chawn I milu sing 500,200 tluk an thi cang. Cu lawng hlah vawlei pi nih khawrawnarungrul kong thawng a zamhmi zoh tik ah a zual lei a panh.
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