Is the effectiveness of Covid vaccines waning over time? We look at how much protection being double vaccinated offers.
There have been warnings from doctors and the UK's Health Security Agency that waning immunity is leading to deaths even of people who have had two doses of a Covid vaccine. So how much protection are we left with?
Yet all is not lost. There are still troops inside the fortified keep at the heart of the castle. These are your memory B and memory T cells. Like knights on horseback they can rally the troops, lead the immunological charge and send the hostile invaders packing. The desertion of these antibody-archers from their posts, has been made worse by the emergence of the Delta variant. It is just better at spreading and getting into our body - it's like a new army rocking up outside the walls, but this one's brought a cave troll and siege weapons.Imagine your antibodies are a legion of archers along your body's defensive outer wall
"The protection you have against relatively mild infection wanes more quickly, but protection from getting into hospital or killing you wanes more slowly." People who start with a weakened immune system, including cancer and organ transplant patients, have a subtly different problem as their body's do not respond as well to vaccines.
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