Uncertainty Lingers Around Long-Term Immunity From Covid-19 Vaccines
In a departure from traditional vaccine design, the leading Covid-19 shots trigger an immune response by leveraging the body’s own cellular mechanics to produce viral proteins. A nurse prepares a shot of the Pfizer-BioNTech Covid-19 vaccine at Guy’s Hospital in London two weeks ago. (AP Photo/Frank Augstein, file) (CN) — Pharmaceutical companies are holding out hope that the mRNA technology used to develop breakthrough Covid-19 vaccines is flexible enough to provide for seasonal shots in case immunity gained from initial vaccination is short-lived. The first Covid-19 vaccine approve...
Source: courthousenews.com