Neutralizing antibodies and persistence of immunity following anthrax vaccination.

The immunity conferred by anthrax avirulent uncapsulated live vaccine following different methods (intradermal and subcutaneous) of vaccination

Assessment of protection against SARS-CoV-2 infection by measuring antibody titer, yes or no!

Dear Editor The current epidemic of the novel Coronavirus disease 2019 (COVID-19) risen from Wuhan, China, turned into a worldwide concern because of its incubation period (2-14 days) and its high transmission rate. The first cases of the infection were reported in December 2019 in Wuhan with symptoms like pneumonia for an unknown reason. Very soon it was known as a novel kind of Coronavirus o...

Needle-free skin patch vaccination method for anthrax.

Three immunizations of mice with recombinant protective antigen (rPA) by transcutaneous immunization (TCI) induced long-term neutralizing antibody titers that were superior to those obtained with aluminum-adsorbed rPA. In addition, rPA alone exhibited adjuvant activity for TCI. Forty-six weeks after completion of TCI, 100% protection was observed against lethal anthrax challenge.

Effect of nasal immunization with protective antigen of Bacillus anthracis on protective immune response against anthrax toxin.

Anthrax toxin consists of three proteins: protective antigen (PA), lethal factor (LF) and edema factor (EF). PA in combination with LF (lethal toxin) is lethal to mammalian cells and is the major component of human anthrax vaccine. Immunization with PA elicits the production of neutralizing antibodies that form a major component of the protective immunity against anthrax. Recent reports have sh...

Contribution of immunological memory to protective immunity conferred by a Bacillus anthracis protective antigen-based vaccine.

Protective antigen (PA)-based vaccination is an effective countermeasure to anthrax infection. While neutralizing anti-PA antibody titers elicited by this vaccine serve as good correlates for protection against anthrax (S. Reuveny, M. D. White, Y. Y. Adar, Y. Kafri, Z. Altboum, Y. Gozes, D. Kobiler, A. Shafferman, and B. Velan, Infect. Immun. 69:2888-2893, 2001), no data are available on the co...