Covid 19 Vaccine

Previous work to develop a vaccine against the coronavirus diseases sars and mers established knowledge about the structure and function of coronaviruses which accelerated development during early 2020 of varied technology platforms for a.

Covid 19 vaccine. Vector vaccines work by using a weakened version of a live virus. After infection with coronaviruses re infection with the same virus though usually mild and only happening in a fraction of people is possible after a period of weeks to years. The vaccine containing the weakened virus is called a viral vector. Understanding how covid 19 vaccines work this web page explains how the body fights infection and how covid 19 vaccines protect people by producing immunity.

There are now vaccines to prevent more than 20 life threatening diseases and work is ongoing at unprecedented speed to also make covid 19 a vaccine preventable disease. In the case of covid 19 vector vaccines this. There are currently more than 100 covid 19 vaccine candidates under development with a number of these in the human trial phase.