No immunisations stops viral infection. This is because relevant antibodies need to be present in extremely high concentrations to stop every single one of millions of inhaled virions getting into any cells at all. If we think of antibodies as like a ‘missile defense system’ it is practically impossible to intercept every single viral instance prior to it binding and entering a cell. Antibodies are just floating around in the bloodstream. This is a big game of probabilities - being in the right place at the right time to mop virions up. It’s also why intranasal vaccination - which produces local tissue responses - may have a big role in the future.
What vaccination does do, though, is prime the immune system to successfully stifle any infection, by recognising infected cells and destroying them (via T-cells) and massively reducing the effective replication and shedding of a virus.
So, vaccinated people (when exposed to sufficient viral loads) will be infected, but they suppress and eliminate the infection faster and produce less new virus, making them less infectious - but not non-infectious.
Hence, common sense prevails: stop the transmission of a virus and it ceases to replicate. Vaccination makes a population much more resilient, but the best thing to do is to reduce spread as well. Hence, when I am in public closed airspaces, I wear a mask - to reduce my likelihood of becoming an asymptomatic contact and transferring the infection to anyone else.
Content created and supplied by: Jonemike (via Opera News )
Opera News is a free to use platform and the views and opinions expressed herein are solely those of the author and do not represent, reflect or express the views of Opera News. Any/all written content and images displayed are provided by the blogger/author, appear herein as submitted by the blogger/author and are unedited by Opera News. Opera News does not consent to nor does it condone the posting of any content that violates the rights (including the copyrights) of any third party, nor content that may malign, inter alia, any religion, ethnic group, organization, gender, company, or individual. Opera News furthermore does not condone the use of our platform for the purposes encouraging/endorsing hate speech, violation of human rights and/or utterances of a defamatory nature. If the content contained herein violates any of your rights, including those of copyright, and/or violates any the above mentioned factors, you are requested to immediately notify us using via the following email address operanews-external(at)opera.com and/or report the article using the available reporting functionality built into our Platform See More