 <unk> and other macrolides or clindamycin are recommended for people with severe penicillin allergies . First @-@ generation cephalosporins may be used in those with less severe allergies and some evidence supports cephalosporins as superior to penicillin . Streptococcal infections may also lead to acute glomerulonephritis ; however , the incidence of this side effect is not reduced by the use of antibiotics . 
