It is very common for medical providers and patients to confuse an allergic reaction from a viral one. Very commonly viruses causes what is medically known as viral pharyngitis, or infection of the tonsils by viruses. Many times medical providers can over treat a viral infection with antibiotics. This is just one example why there is so much resistant bacteria. If you or your child has recurrent infections that might be allergies it is wise to find out if there is an allergic trigger. Such triggers include trees, grass, ragweed, pets, molds, dust mites and cockroaches. It is always recommended to find out what these triggers might be and speak to the proper provider to make sure that it is truly a bacterial infections and not of a viral or allergic origin.