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Clay Rivers | 1 years ago (raw) | export | reply | flag 
 @46cd5609 Greetings, Doc! Still loving your posts. Thanks.

Question: Is “natural immunity” a real thing after having COVID?
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Hannu Ikonen, MD | 1 years ago (raw) | root | parent | reply | flag 
 @066263a7 Only for about  3-4months and incomplete due to variant mutation. 

Thats the quick and dirty. 

Coronaviruses generally dont build durable immunity like Measles or ChickenPox. And durable immunity still isnt guaranteed in those situations, hence a series of vaccines