zithromax will have no effect on influenza. it is an antibiotic and this would only work for a bacterial infection; influenza is a virus. the prednisone may have been for wheezing (? ). neither medication will cause swollen lymph nodes but your underlying medical issues whether it was influenza or not certainly can. you would need to see your medical provider again to properly evaluate the significance of those nodes.
i took zitrimax for flu and am still on prednisone. could this cause swollen lymph glands. had flu middle of january. took zithromax and a round of prednisone. was still not completely well so doctor put me on another round of prednisone. will take last pill 2/1<negative_smiley>2014. problem is in neck area by lymph nodes on my left side. could these meds be causing swollen gland?