CNN reports a significant proportion of adults all over the world say they have major concerns about receiving a vaccination for the novel coronavirus.<br />Neil Johnson is a physicist at George Washington University who is studying vaccine skepticism on social media.<br />Johnson says among people who aren't anti-vaxxers, but are dubious about a COVID-19 vaccine, have four commonly held objections.<br />The first is whether the vaccine is safe; the second is whether the vaccine is actually necessary.<br />The third concern surrounds trust in the establishment and the pharmaceutical companies producing the vaccines.<br /><br /> The fourth major concern is the perceived uncertainty in the science of immunology.
