The finding is part of the immediate phase of the trial in which it was decided to reduce the doses after some participants developed fever and headaches classified as severity level two on a scale of four.
The results also showed that children who received a lower dose had a stronger antibody response than adults who received a booster shot 56 days after the first dose.
But the antibody readings did not show the extent to which the vaccine can offer protection against Covid-19, researchers from a Chinese disease control agency, CanSinoBIO and other Chinese institutes warned in a paper.
The CanSinoBIO vaccine has yet to get the green light for children.
China has approved two vaccines, developed by Sinovac and Sinopharm, for use in children ages three and up, but vaccines have not yet started for those under 12 years of age.
Are there vaccines for children in Mexico?
For the age range that includes up to 11 years of age, there are still no approved assets in Mexico; However, the country will begin to immunize children between the ages of 12 and 17 who suffer from any disease or disability.
The Undersecretary of Health, Hugo López-Gatell indicated that it is expected to vaccinate between 750.00 and 1 million minors between the aforementioned age range with the Pfizer BioNtech vaccine.
“In the case of Mexico, we can only use the Pfizer BioNtech vaccine because it is the only one that has scientifically proven to be safe and effective in children and adolescents; it is not ruled out that other pharmaceutical companies at the time also present their files and demonstrate that the vaccines can also be used in girls, boys and adolescents “.
Unlike the national vaccination strategy for adults over 18 years of age, the application modules will be located in hospitals and will be permanent.