I had influneza a last week and have a sinus infection caused by haemophilus.i am prone to sinus infections. its been almost 2 weeks since i 1st had symptoms. do i take a zpack or wait it out.

No: Antibiotics are ineffective against viruses —including those which cause most upper-respiratory tract infections — and many leading organizations now recommend against the routine use of antibiotics unless there is clear evidence of a bacterial infection.

Sinusitis: There is a chance that sinusitis will clear up untreated but in many cases it doesn't and treatment is needed. If it persists it can become chronic. Consult an ENT specialist.