LONDON (Reuters) - Emerging evidence that the body’s immune defence against COVID-19 may be short-lived makes it even harder for vaccine developers to come up with shots fully able to protect people in future waves of infection, scientists said on Tuesday.
That raises big problems for developers of potential COVID-19 vaccines, experts say - and for public health authorities seeking to deploy them to protect populations from future waves of the pandemic.
He and other vaccine and immunology experts also said it does not necessarily follow that waning immunity in natural cases of COVID-19 infection would be the same with vaccine-induced immune response:.
so the ideal goal is to do better than infection itself by making the vaccine immunity even stronger than the natural one.”.
“Giving the entire world even one dose of a vaccine is one thing,” he said.