What antibiotic can be used for otitis or pharyngitis if you are allergic to cephalosporin antibiotics and amoxicillin?

In order to choose the right antibiotic, effective in the treatment of inflammation and throat and ear, especially in patients who are allergic to certain substances, a swab from these areas should be performed. Then the culture is performed, i.e. the collected material is applied to substrates containing media that allow bacteria to grow, thus obtaining their growth. After the specific microbes have been grown, an antibiogram is drawn up that assesses the sensitivity or resistance of bacteria to antibiotics or antimicrobial chemotherapeutic agents. Based on the antibiogram, the doctor selects an antibiotic that causes the death of the grown bacteria. I am attaching a study that may be helpful: https://www.gdziepolek.pl/artykuly/fakty-i-mity-o-antybiotykach