NITI Aayog’s Dr. VK Paul explained whether a person can take a second dose of a different vaccine. Dr. Paul said that it is scientifically possible to do so but practical use is yet to be done. A recent UK study has found that it is safe to mix doses of different types of vaccines, but there will be many side effects, the study has revealed. "It is plausible. But there needs to be more studies. It can't be said definitively that mixing of doses can be practiced. There is no robust scientific evidence. Only time will tell whether it will be done in the future or not, It will depend on international studies, World Health Organization findings, etc. Our experts are also continuously studying," Niti Aayog (health) member VK Paul said on Saturday. Watch the full video for more details.