"The cystic fibrosis (CF) drug Orkambi (Vertex Pharmaceuticals) has received a green light from the European Medicines Agency (EMA) Committee for Medicinal Products for Human Use (CHMP).
Orkambi is a fixed-dose oral combination "...
(Meningococcal (Groups A, C, Y and W-135) Polysaccharide Diphtheria Toxoid Conjugate Vaccine)
Menactra®, Meningococcal (Groups A, C, Y and W-135) Polysaccharide Diphtheria Toxoid Conjugate Vaccine, is a sterile, intramuscularly administered vaccine that contains Neisseria meningitidis serogroup A, C, Y and W-135 capsular polysaccharide antigens individually conjugated to diphtheria toxoid protein. Nmeningitidis A, C, Y and W-135 strains are cultured on Mueller Hinton agar3 and grown in Watson Scherp4 media. The polysaccharides are extracted from the N meningitidis cells and purified by centrifugation, detergent precipitation, alcohol precipitation, solvent extraction and diafiltration. To prepare the polysaccharides for conjugation, they are depolymerized, derivatized, and purified by diafiltration. Corynebacterium diphtheriae cultures are grown in a modified Mueller and Miller medium5 and detoxified with formaldehyde. The diphtheria toxoid protein is purified by ammonium sulfate fractionation and diafiltration. The derivatized polysaccharides are covalently linked to diphtheria toxoid and purified by serial diafiltration. The four meningococcal components, present as individual serogroup-specific glycoconjugates, compose the final formulated vaccine. No preservative or adjuvant is added during manufacture. Each 0.5 mL dose may contain residual amounts of formaldehyde of less than 2.66 mcg (0.000532%), by calculation. Potency of Menactra vaccine is determined by quantifying the amount of each polysaccharide antigen that is conjugated to diphtheria toxoid protein and the amount of unconjugated polysaccharide present.
Menactra vaccine is manufactured as a sterile, clear to slightly turbid liquid. Each 0.5 mL dose of vaccine is formulated in sodium phosphate buffered isotonic sodium chloride solution to contain 4 mcg each of meningococcal A, C, Y and W-135 polysaccharides conjugated to approximately 48 mcg of diphtheria toxoid protein carrier.
There is no latex in any component of the vial.
3 Mueller JH, et al. A Protein-Free Medium for Primary Isolation of the Gonococcus and Meningococcus. Proc Soc Exp Biol Med 1941;48:330-333.
4 Watson RG, et al. The specific hapten of group C (group IIa) meningococcus. I. Preparation and immunological behavior. J Immunol 1958;81:331-336.
5 Mueller JH, et al. Production of diphtheria toxin of high potency (100 Lf) on a reproducible medium. J Immunol 1941;40:21-32.
What are the possible side effects of meningococcal conjugate vaccine (Menactra, Menveo)?
Keep track of any and all side effects your child has after receiving this vaccine. When the child receives a booster dose, you will need to tell the doctor if the previous shot caused any side effects. Your child should not receive a booster vaccine if he or she had a life threatening allergic reaction after the first shot.
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
You may feel faint after receiving this vaccine. Some people...
What are the precautions when taking polysaccharide diphtheria toxoid conjugate vaccine (Menactra)?
Before receiving this vaccine, tell your doctor or pharmacist if you are allergic to it; or to latex; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before receiving this vaccination, tell your doctor or pharmacist your medical history, especially of: current fever/illness, a certain nerve disease (Guillain-Barre syndrome), bleeding disorders (such as hemophilia, thrombocytopenia).
During pregnancy, this vaccine should be used only when clearly needed. Discuss the risks and benefits with your doctor.
It is unknown if this medication passes into breast milk. Consult your doctor before...
Last reviewed on RxList: 9/12/2014
This monograph has been modified to include the generic and brand name in many instances.
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