Vaccine protection against serious illness and death remains strong.
Side effects are typically mild and last.
While concerning, this is normal because viruses evolve over time.
The follow up was as thorough as it is for any vaccine, and we now have months of data on patients who received the vaccine or placebo, and we've compared the incidence of side effects between patients who received the vaccine and placebo, and that incidence of side effects, other than injection site reaction, is no different.
The second dose can be given three to eight weeks after the first dose.
CanSino Biologics China :Â Set to begin large-scaleÂ , CanSino's vaccine has already beenÂ.