Needle-free vaccines may persuade people who don't like getting a shot to get vaccinated, as well as help expand vaccination in poor countries because they are easier to administer.
The needle-free vaccine can be stored and administered more easily than intramuscular jabs and can trigger strong antibody responses, according to a Lancet report published in July 2021.
Pfizer, Moderna and AstraZeneca confirm that pork products are not part of their Covid-19 vaccines.
Subscribe to our Youtube channel for all latest in-depth, on the ground reporting from around the world.
Copyright © 2023 TRT World.