Vaccine FAQs

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About the Vaccine

What’s in the vaccines and how do they work? 
What are the differences between the Pfizer and Moderna vaccines? Which vaccine should you get?  
Were the mRNA COVID-19 vaccines produced using fetal tissue or cells? 
Why do the vaccines require two shots, and what happens if you miss the second shot? 
How effective are the vaccines?  
What are the potential side effects of the COVID-19 vaccine? 
How does the new COVID-19 mutation that has emerged in the UK affect the efficacy of the vaccines?  

Vaccine Distribution

How did UTSW prepare for vaccine distribution? 
Will UT Southwestern distribute both the Pfizer and Moderna vaccines? 
What is the population breakdown within each vaccine distribution phase?  
How will I know when I can get the vaccine?  
What is the process for obtaining a second dose? 
Will PPE requirements change after I’m vaccinated?  
Can I still carry/transmit COVID-19 after I've been vaccinated?  
Can I decline the vaccine?  
Why should I consider vaccination?  
How do we achieve herd immunity?  

Vaccine Safety

How do we know steps weren’t skipped to produce the vaccines faster? 
Will the vaccine affect fertility in women? 
Is the vaccine safe for pregnant and breastfeeding women?  
Is the vaccine safe for kids?  
Should the vaccine be given to individuals who have already had COVID-19?  
How are we advising people with a history of allergic reactions to prior vaccines or injectable drugs?  
Is it safe for immunocompromised people to get the vaccine?  

We continue to receive questions from across our UT Southwestern community and will expand our vaccine FAQs as answers are available. Please check back often for updates and us with additional questions you may have.