With COVID-19, questions about how infections cause lasting immunity, or don’t, and how you know and what it all means for vaccines have become a matter of public focus. But some immunologists have been pondering those questions for years. “The immune system has a very good memory,” Bali Pulendran told BioWorld. “Clearly, some viruses and some pathogens can enter the body and stimulate the immune system, and the immune system can remember that encounter for decades.”
With strong results in hand from the phase I stage of its phase I/II study testing a would-be COVID-19 subunit vaccine, Novavax Inc.’s president of R&D, Gregory Glenn, said “it’s possible we could go down in the dose” as work proceeds and get similar efficacy.
DUBLIN – Sanofi SA and Glaxosmithkline plc are lending their considerable weight to the urgent global effort to develop a vaccine for COVID-19 by teaming up to develop an adjuvanted recombinant subunit vaccine that will employ technologies from each company. Paris-based Sanofi is contributing its recombinant spike protein antigen and its baculovirus expression system, which is also the basis of its U.S.-licensed influenza vaccine Flublok. London-based GSK is contributing its pandemic adjuvant technology.