Current vaccines were based on the previous version of the virus. However, scientists believe that they would be effective for new types of viruses.
The first result of BioNTech/Pfizer vaccines provides protection but less effective to new variants.
Two new vaccines (from Novavax and Jannsen) to be approved sooner would provide the protection as well. Experts from Oxford-AstraZeneca explained that their vaccine is protective against to new English variant.
Experts state that although this vaccine still provides protection against severe Covid-19 diseases, it is less effective against the South African variant.
Preliminary results from Moderna also show that the vaccine is effective against the South African variant. However, experts point out that the immune response may not be strong and long-lasting in this variant.
Experts say that many different variants may emerge in the future, but even in the worst-case scenario, vaccines can be redesigned or modified within a few weeks or months.
It is stated that the flu vaccine is updated to cover new strains every year, as well as the coronavirus vaccines, can be renewed.