các lo?i t? n?n xã h?i Hello?n nay r?t ?a d?ng và có th? ???c phân lo?i theo nhi?u cách khác nhau. M?t s? lo?i t? n?n xã h?i ph? bi?n hi?n nay g?m:Keep away from hospitals and clinics in which coughing tuberculosis (TB) patients are dealt with. See your overall health treatment supplier when you come back to debate whether or not you should