The Centers for Disease Control and Prevention has identified 10 early cases of people with prior COVID-19 infections who were consequently reinfected with Omicron. This finding raises questions about how long super immunity lasts.
Initial thoughts on Omicron’s high transmissibility attributed it to higher viral loads, similar to the characteristics of the Delta variant. But the results of two studies reveal that Omicron’s transmissibility prowess is not because of a high viral load. Instead, it is due to its immune evasion. The studies point out that Omicron’s mutations have the ability to evade immunity from vaccinations or past infections.