Breakthrough COVID infection: What we must know about post-recovery immunity
COVID will give them longer-term immunity for when the next wave comes. Since the early days of the pandemic we’ve known COVID induces a wide range of immune responses and one infection provides partial protection from future infections.
Unfortunately, immunity wanes over time – people lose half their immunity every 3 months. Further, new variants continue to emerge that are partially resistant to key immune responses – antibodies that neutralise earlier strains – this is especially true of Omicron.
We’re starting to get a more detailed understanding of COVID immunity across variants. Here’s what we know so far … Breakthrough infection happens but vaccines are still a must Since around 95% of Australians over 16 have had at least two COVID vaccines, most people catching COVID now have previously been vaccinated – this is called “breakthrough infection".
The vaccines are effective at substantially reducing severe COVID illness. They are less effective, particularly over time, at preventing infections, including with new variants.
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United States
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Cases: 46 252 513
Deaths: 750 423
Recovered: 0
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India
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Cases: 34 321 025
Deaths: 459 652
Recovered: 0
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Brazil
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Cases: 21 835 785
Deaths: 608 235
Recovered: 0
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United Kingdom
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Cases: 9 215 683
Deaths: 141 607
Recovered: 0
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Russia
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Cases: 8 494 589
Deaths: 237 619
Recovered: 0
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