One day you wake with a sore throat and a runny nose. Your doctor takes a swab from your throat, sends it to a lab, and telephones you the next day to say that antibiotic will not help you get better. Which of the following is the most likely reason for the doctors statement?
Having waited a day, it is too late to take an antibiotic
You need an antiseptic, not an antibiotic
You need to be vaccinated instead of taking an antibiotic
You are infected by a virus