What You Need to Know about Mixing COVID-19 Vaccines

Farheen Khan, (Hons) B.Sc. (Biochemistry) [Get Well Clinic]

As we enter summer 2.0 of the COVID-19 pandemic (and hopefully the final summer as well), Canadians have been preparing to receive their second COVID-19 vaccine dose. To recap, most Canadians have already received their first dose of one of three COVID-19 vaccines: Pfizer-BioNTech (mRNA technology), Moderna (mRNA technology, or Oxford-AstraZeneca (adenoviral vector technology). Though there have been a lot of questions regarding the second dose, the most common ones have been regarding mixing vaccines. If you find yourself wondering whether it is okay to mix any of the available COVID-19 vaccines, please continue to read on as this article may answer some of your questions.

Pin It

Oxford-AstraZeneca and Janssen / Johnson & Johnson... Two More COVID-19 Vaccines Approved by Canada

( Current upated information as of 25-Mar-2021 )
By Farheen Khan, (Hons)B.Sc. (Biochemistry) [Get Well Clinic]

It is now the month of March, and a few more vaccine candidates have marched into our COVID-19 vaccine toolkit. These include the newly approved Oxford-AstraZeneca and Janssen-Johnson & Johnson vaccines.  

Both vaccines are viral vector vaccines.1 More specifically, these vaccines contain a weakened, live adenovirus - a virus that causes the common cold.2 To develop these vaccines, scientists first removed all disease-causing and replication-related genes from the adenovirus.1,3–5 As the adenovirus can now no longer replicate or cause disease, it is harmless to the human body.1,3–5 

Pin It

2021: A SHOT at a Better Year : How the COVID-19 mRNA Vaccines Work

Farheen Khan, (Hons)B.Sc. (Biochemistry) [Get Well Clinic]


The year 2020 will forever be remembered as the year of COVID-19, social distancing, cancelled plans, and more. Luckily, it is coming to an end (finally) with promising results from Pfizer/BioNTech and Moderna regarding the availability of COVID-19 vaccines by early 2021. These vaccines are one type of many different vaccine systems being developed and produced for protection against COVID19.

Both vaccines are messenger RNA (mRNA) vaccines.1,2 Before going on to further explain how these vaccines work, I’d like to first assure that the mRNA engineered for the Pfizer and Moderna vaccines will not integrate into and remain in our DNA forever. Here’s why:

Pin It

How to Prevent Getting Cancer

Newer HPV Vaccine prevents 90% of cervical cancers, anal cancers, and genital warts!

Gardasil-9 is better than original Gardasil.



Cancer is a scary word. We all know someone, a friend, family member, or co-worker who developed cancer. They go through difficult treatments like surgery, chemotherapy and radiation. Sometimes they die. We all fear getting cancer some day in our life. When you feel a little sensation in your body, do you often wonder if you might have cancer? Many people always end up going to family doctors and asking if they have cancer. It is a top reason why people request unnecessary imaging and tests, just to reassure themselves that they don't have cancer. We also always get asked questions about what kind of foods, or supplements to take to prevent getting cancer. Why wait until you have cancer to treat it, when you can prevent getting cancer in the first place?

Pin It

Get Well Clinic

649 Sheppard Ave West
Toronto, ON, M3H 2S4
Tel: (416) 508-5691
Fax: (647) 478-7604



Download Referral Forms

Get Well Clinic

Weight Loss Program

MB-EAT Group

CBT Setup

Shopping cart 购物车


Cart empty