Through vaccinations, but also through surviving infections, people develop immunity against the corona virus. But how good is it actually and how long does it last?
SARS-CoV-2 has kept the world in suspense for over a year. Other viruses are also highly contagious and dangerous, but this virus was completely new to mankind. And this is exactly where the problem lies: all over the world, people have been naive to the virus. This means that not a single immune system had an answer to this attacker and anyone who came into contact with the virus could also get sick and pass the virus on. That is the only reason why the pandemic was able to develop as we have experienced in recent months.