China will offer a second COVID-19 booster dose to certain groups who had received their first booster shot more than six months ago, authorities said Wednesday.
The targeted groups are people with a high risk of infection, elderly aged over 60 years old, people with serious underlying health conditions, and those with low immunity, according to a circular released by the State Council joint prevention and control mechanism against COVID-19.
All vaccines approved for conditional marketing or emergency use can be used as a second booster dose, according to the document.
It adds that sequential booster immunization, a vaccination strategy that uses different types of vaccines for booster inoculations, or omicron-resistant vaccines, are preferred in choosing second booster doses.
