This became a HUGE question for me and Lutz. Sure you can mix them but…should you? We received AzrtaZeneca on May 1, 2021. Our next scheduled shot was for July 19, 2021, however, we are in a hurry to get to the USA and want to leave ASAP. Since there is a 15 day waiting period after the second shot for traveling we decided to seek the second shot earlier. My doctor called and asked if we’d like to take the second shot, BionTech earlier on July 1, 2021. So of course I had to do some research. Check this article out and leave a comment about what you think…I’m curious about your thoughts. I’ll let you know what we did in my August newsletter.