<s>[INST] my 2 and a half month old baby girl has been coughing for a few days nw,the doc says shes got a bad chest and prescribed her med but t was no use,now i tok her back to the doc and he said he has to put canola in her head nd gv hr med through injections. [/INST] hi.2 and a half month baby with cough or fever or vomiting associated could be signs of sepsis or Bacteremia of which lower respiratory tract infection could be a source. if blood counts shows a total count of >15000 Iv antiobiotics will b better . and if there is fast breathing and on chest X-ray a patch or multiple infiltrates are seen you have got ur source for respiratory symptoms . a cannula in the head won't be necessary unless the doctor you went to found the need for it, it's better if there is a good communication and clearance of any doubts regarding the treatment options . :) do not worry hope this helps. </s>