Further research shows why people who have had COVID-19 should still be vaccinated.
People who have recovered from COVID-19 and then become vaccinated may have what is called “hybrid immunity.”
It is when natural immunity to an infection is combined with immunity to the vaccine.
Immunologists say that against some of the most troubling variants, it can create 100 times better antibody levels after vaccination compared to the above for someone with natural immunity.
Here are some of the latest research from Oregon Health and Science University.
Scientists do not know for sure how much immunity COVID-19 patients recover from in their system and how long that immunity lasts.
This CDC study found antibodies to an infection and the COVID trait more than doubled reinfection.
You can read more in this NBCNews.com article.