What do having had Covid-19 and wearing a fanny pack have in common? Neither should affect whether you should get the Covid-19 vaccine. Some may claim that they are “immune to the Covid-19 coronavirus” after recovering from an infection and therefore not need a Covid-19 vaccine. However, the response to such a statement should be “immunity maybe,” a variation of the Carly Rae Jepsen song. It’s not clear what percentage of people who have had Covid-19 develop enough of an immune response to protect them from subsequent infection. What degree of immunity you may develop could depend on a variety of factors such how severe your first bout of Covid-19 happened to be. It is also not clear how long such immunity may last. As I have reported previously for Forbes, there have already been confirmed cases of re-infection with the virus. In other words, like the 2005 movie Deuce Bigalow: European Gigolo after the 1999 film Deuce Bigalow: Male Gigolo, a bout of Covid-19 could possibly be followed by a sequel, perhaps an even worse sequel. Some cases of re-infection have been more severe than the initial infection. According to the Centers for Disease Control and Prevention (CDC), “based on what we know from other related human coronaviruses, people appear to become susceptible to reinfection around 90 days after onset of infection.” That’s not super-long, being only about nine Scaramuccis. So you can’t assume that you’re immune to the Covid-19 coronavirus after you’ve recovered from a severe acute respiratory syndrome coronavirus 2 (SARS-CoV2) infection. It’s not like banking on a Presidential pardon. You can’t just do anything like not social distance and expect your immune system to say no problem. You may not know whether you have natural immunity, which is immunity gained from recovering from an infection, or how long it may last. What’s different about the Covid-19 vaccine then? Well, immunity from the vaccines may not be the same as natural immunity. The two currently available Covid-19 vaccines from Pfizer/BioNTech and Moderna, don’t simply expose you to the SARS-CoV2. Instead, as I described previously for Forbes, they contain mRNA that can serve as blueprints for your cells produce the spike protein that is on the surface of the Covid-19 coronavirus virus. Remember that the Covid-19 coronavirus looks like a spiky massage ball. Your body normally doesn’t have anything like these little spikes. So the spike protein appearing inside your body can be like a Kanye West fan appearing at a Taylor Swift fan party. Or cottage cheese inside a hot dog. Your immune system then is supposed to say, “hey, this doesn’t belong here,” and generate a response to the spike protein. By exposing your immune system to a very specific component of the virus, your immune system may be better able to focus specifically on this component, rather than fire off in random directions when it first encounters the virus in a natural infection.
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