"Mixing COVID vaccines could give you more protection"
NBC News (KNBC-TV) interviewed Dr. Kristen Choi about research by the NIH that suggests mixing vaccines may enhance the immune response to COVID-19.
![Dr. Kristen Choi](https://ph.ucla.edu/sites/default/files/styles/hero/public/2022-08/2022.04.27_Choi_NBC_Masthead.png?itok=n4ndGVmT)
A government study of 450 people says that "mixing vaccines may enhance the immune response" to the COVID-19 virus.
In light of that research by the National Institutes of Health, some public health experts tell the I-Team people might want to switch vaccines when getting booster shots.
"For people who got the J&J vaccine originally, their protection was much greater if they get an MRNA vaccine as their second booster," said Professor Kristen Choi of UCLA's Fielding School of Public Health and School of Nursing.
Faculty Referenced by this Article
![Faculty/staff profile placeholder image](https://ph.ucla.edu/sites/default/files/styles/large/public/2022-07/person-placeholder.jpg?itok=Yj28CoTl)
Dr. Ron Andersen is the Wasserman Professor Emeritus in the UCLA Departments of Health Policy and Management.
![Faculty/staff profile placeholder image](https://ph.ucla.edu/sites/default/files/styles/large/public/2022-07/person-placeholder.jpg?itok=Yj28CoTl)
EMPH Academic Program Director with expertise in healthcare marketing, finance, and reproductive health policy, teaching in the EMPH, MPH, MHA program
![Michelle Keller](https://ph.ucla.edu/sites/default/files/styles/large/public/2022-07/keller-michelle_500x500.jpg?itok=uJryn-xx)
Dr. Michelle S. Keller is a health services researcher whose research focuses on the use and prescribing of high-risk medications.
![James Macinko](https://ph.ucla.edu/sites/default/files/styles/large/public/2022-07/Macinko%2C%20J_500x500_10.jpg?itok=bsG1e-s6)
Professor of Community Health Sciences & Health Policy and Management, and Associate Dean for Research
Nationally recognized health services researcher and sociomedical scientist with 25+ years' experience in effectiveness and implementation research.
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