01 January 1970 31 4K Report

With the appearance of COVID-19 vaccines on the market, many available choices are there.

Which one is good?

Which one is safest?

Which one is most expensive?

Which one is easiest to store?

How many doses are required?

Other than intramuscular injection, any other forms?

How to check immune response after?

Do we need post-injection blood test?

Do we need annual booster dose?

Do we need new vaccines every year by prediction as if flu vaccines?

Any contraindications?

Any allergy from vaccination?

Do we need to mask after injection?

More Sunny Chi Lik Au's questions See All
Similar questions and discussions