No Shortage of COVID-19 Vaccine Choices

As the world first began to feel the devastating effects of COVID-19 in early 2020, scientists and medical researchers raced to develop an effective vaccine to prevent the deadly virus. The good news is that there are now at least nine effective COVID-19 vaccines on the market thanks to these efforts.

Differences in Vaccines

With so many available vaccines, it can be challenging to discern the differences between the options. A Ph.D. biochemist named Etienne out of the UK has developed a series of flashcards that explain the differences between the vaccines. While there have only been three vaccines that have been approved for emergency use authorization in the U.S, it is helpful to understand the key differences between the nine available global vaccines.


One of the most important elements that people look to is the efficacy of each vaccine. It is important to note that not all vaccines have been tested against all of the current circulating variants. The Novavax vaccine boasts the highest efficacy rate against the original strain of the virus at 96%. Pfizer and Moderna, the two most widely used vaccines in the U.S., are right behind at 95% and 94%, respectively.

Type of Vaccine and Dosing Differences

Another major difference between the various vaccines is how they work to prevent the virus. The different categories include encapsulated mRNA vaccines, viral vector vaccines, subunit vaccines, and inactivated virus vaccines.

Although the majority of vaccines require two doses spaced a determined number of days apart, the Johnson & Johnson vaccine only requires one dose. This makes it an attractive option for those who want to be done with the process more quickly.