#AskTheExpert my 3.5 year old caught cold and cough so frequently. we started first consultation on june 12th(last month) cause of cold, fever and caugh. after taking azitromycin she reliving from the symptoms .. but two days after the medication stopped she again get cold and doc prescribed mox.. after 5 days she is ok... there is no cough cold or fever. but after completed antibiotic within twodays she started cold and fever!! ( in blood test ige are normal but she having high esr count) why this happen so frequently??