Respuesta :
Because that way they know what antibiotic to give they may not prescribe a prescription that doesn't apply to your illness.
hope i helped!!
:)
Since in more than 25% of cases studied by scientists, prescriptions are useless for the infection stems of a virus cannot be treated with antibiotics. This overuse of antibiotics has a number of downsides which include types of drugs that kill more of the "good" bacteria found in our bodies leading to more side effects.
Hope this helps! <3