The European Union decided on a communal buying programme, but it has been hit by numerous supply problems and delays.
Pfizer–BioNTech COVID-19 vaccine
RNA COVID-19 vaccine
The Pfizer–BioNTech COVID-19 vaccine, sold under the brand name Comirnaty, is an mRNA-based COVID-19 vaccine. It is used in people aged 12 years and older to provide protection against infection by the SARS-CoV-2 virus, which causes COVID-19. BioNTech, a German company, developed the vaccine and collaborated with Pfizer, an American company, for support with clinical trials, logistics, and manufacturing. In China, BioNTech is partnered with China-based Fosun Pharma for development, marketing, and distribution rights and the vaccine is colloquially described as the Fosun–BioNTech COVID-19 vaccine. The vaccine is given by intramuscular injection. It is composed of nucleoside-modified mRNA (modRNA) encoding a mutated form of the full-length spike protein of SARS-CoV-2, which is encapsulated in lipid nanoparticles. Vaccination requires two doses given three weeks apart.