If I had COVID-19 in the third or fourth viral waves, can I still get infected with Omicron?
Yes, the Omicron variant has been associated with an increased risk of reinfection, that is, new infections with SARS-CoV-2 in previously recovered individuals.
How long does immunity from vaccines last?
Immune responses to COVID-19 vaccination have been shown to last up to eight months, but antibody levels decrease as early as three months post-vaccination, and this decay (or waning) varies among individuals of different ages and those with underlying medical conditions.
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