How common is anaphylaxis shock with cephalosporin?

Uncommon. Anaphylaxis to cephalosporins is an uncommon event. Among patients with penicillin allergy estimates of allergic reactions to cephalosporins range from 2 to 10%.

Related Questions

If I was allergic to cephalosporins when I take it how long until I would get anaphylaxis?

Anaphylaxis. Some individuals who repeatedly take an antibiotic don't eventually get anaphylaxis. It is always a possibiity. I dont recommend taking something repeatedly if you know you are allergic to it. Read more...

Would the older or newer generation of cephalosporins antibiotics be more likely to cause anaphylaxis in patients severely allergic to penicillin?

3rd generation ... ...Cephalosporins (the newest ones) have never been reported to cause anaphylaxis: http://www.Ncbi.Nlm.Nih.Gov/pmc/articles/pmc2094874/ -- and 1st and 2nd gen cephalosporins, only rarely. Read more...
Newer better. Less than 10% of the people allergic to penicillin reacts to cephalosporins. The newer generation of cephalosporins has an even lower cross-reactivity. However you should consult an allergist to get this sorted out for you since even a few percentage risk of anaphylaxis can be deadly for the affected person. Read more...
See below. Persons with type 1 immediate hypersensity to penicillin antibiotics should generally avoid taking cephalosporin antibiotics because of the low but real risk of cross allergenicity. Safe alternative antibiotics include vancomycin, septra, (sulfamethoxazole and trimethoprim) macrolides, tetracyclines, aztreonam, clindamycin, zyvox, quinolones etc. Read more...