How long does immunity last after a COVID infection? News reports of two recent studies suggest that it wanes quickly and that some patients may never have immunity at all. In this episode, we take a look at those studies and explain why they don't exactly say what is being said about them.     Take home points

• Not everyone keeps detectable IgG after asymptomatic or symptomatic infection
• If you have asymptomatic COVID-19 infection, you are less likely to have detectable IgG at 8 weeks compared to someone who had symptoms

  What we still don't know

• Does this drop or absence of IgG correlate to decreased immunity? The reflex answer would seem to be 'yes' but we still don't understand the COVID-19 correlates of protection (blood tests that can show whether or not someone has immunity).
• The likelihood of those who have had COVID-19 getting reinfected. The studies discussed in this podcast evaluated parts of the immune system that are involved in immunity, but we haven’t answered the real question: what is the likelihood of having a repeat illness (or repeat asymptomatic infection). 

Mentioned in this show The Stimulus COVID Podcast Page: Click Here   For References and Links to the Studies: Click Here   To Learn More About Stimulus: https://www.stimuluspodcast.com/