Anthrax vaccine

Currently administered human anthrax vaccines include acellular (USA, UK) and live spore (Russia) varieties.

All currently used anthrax vaccines show considerable local and general reactogenicity (erythema, induration, soreness, fever) and serious adverse reactions occur in about 1% of recipients.

His laboratory notebooks, now in the Bibliothèque Nationale in Paris, in fact show Pasteur used the method of rival Jean-Joseph-Henri Toussaint (1847–1890), a Toulouse veterinary surgeon, to create the anthrax vaccine.

In 1885, Pasteur produced his celebrated first vaccine for rabies by growing the virus in rabbits and then weakening it by drying the affected nerve tissue.

[12] Beginning in 1934 at the Onderstepoort Veterinary Research Institute, north of Pretoria, he prepared an attenuated anthrax vaccine, using the method developed by Pasteur.

It was given either by scarification or subcutaneous injection (only in emergency)[14] and its developers claimed that it was reasonably well tolerated and showed some degree of protective efficacy against cutaneous anthrax in clinical field trials.

[14] British biochemist Harry Smith (1921–2011), working for the UK bio-weapons program at Porton Down, discovered the three anthrax toxins in 1948.

During the Gulf War (1990–1991), UK military personnel were given AVP concomitantly with the pertussis vaccine as an adjuvant to improve overall immune response and efficacy.

Research under the auspices of the US Army ]at Fort Detrick in Frederick, MD was lead by George G. Wright and Milton Puziss.

AVA is produced from culture filtrates of an avirulent, nonencapsulated mutant of the B. anthracis Vollum strain known as V770-NP1-R.[25] No living organisms are present in the vaccine which results in protective immunity after 3 to 6 doses.

[25] AVA remains the only FDA-licensed human anthrax vaccine in the United States and is produced by Emergent BioSolutions, formerly known as BioPort Corporation in Lansing, Michigan.

Ten million doses of AVA have been purchased for the U.S. Strategic National Stockpile for use in the event of a mass bioterrorist anthrax attack.

Controversy ensued since vaccination was mandatory and GAO published reports that questioned the safety and efficacy of AVA, causing sometimes serious side effects.

[28] After reviewing extensive scientific evidence, the FDA determined in 2005 that AVA is safe and effective as licensed for the prevention of anthrax, regardless of the route of exposure.

The vaccinations are required for most U.S. military units and civilian contractors assigned to homeland bioterrorism defense or deployed in Iraq, Afghanistan or South Korea.

Anthrax toxin protective antigen (fragment) heptamer, Bacillus anthracis .