jam
Okiejanali, influenza kiah kaaz sivier ilnis ingkluudn praimri vairal nyuumuonia ar sekanderi baktiirial nyuumuonia.[28][29] Di abvios simtom a chobl wid briidin.
eng
Occasionally, influenza can cause severe illness including primary viral pneumonia or secondary bacterial pneumonia.[28][29] The obvious symptom is trouble breathing.