* history of sars-cov-2 infection; * have been received two doses of inactivated sars-cov-2 vaccine(coronavac)manufactured by sinovac research \& development co., ltd at an interval of less than 6 months; * have received received any circulating seasonal influenza vaccine; * have received any pneumococcal vaccine within 5 years; * history of asthma, history of allergy to the vaccine or vaccine components, or serious adverse reactions to the vaccine, such as urticaria, dyspnea, and angioedema; * history of uncontrolled epilepsy and other serious neurological diseases such as transverse myelitis, guillain-barre syndrome, demyelinating diseases; * history of fever at the time of vaccination, or acute onset of chronic disease, or severe uncontrolled chronic disease, or acute disease; * already pregnant (including a positive urine pregnancy test) or are breastfeeding, planning to get pregnant within 3 months; * receipt of other investigational drugs in the past 30 days; * receipt of attenuated live vaccines in the past 14 days; * receipt of inactivated or subunit vaccines in the past 7 days; * according to the investigator's judgment, the subject has any other factors that are not suitable for participating in the clinical trial.

* history of sars-cov-2 infection; * have been received two doses of inactivated sars-cov-2 vaccine(coronavac)manufactured by sinovac research \& development co., ltd at an interval of less than 6 months; * have received received any circulating seasonal influenza vaccine; * have received any pneumococcal vaccine within 5 years; * history of asthma, history of allergy to the vaccine or vaccine components, or serious adverse reactions to the vaccine, such as urticaria, dyspnea, and angioedema; * history of uncontrolled epilepsy and other serious neurological diseases such as transverse myelitis, guillain-barre syndrome, demyelinating diseases; * history of fever at the time of vaccination, or acute onset of chronic disease, or severe uncontrolled chronic disease, or acute disease; * already pregnant (including a positive urine pregnancy test) or are breastfeeding, planning to get pregnant within 3 months; * receipt of other investigational drugs in the past 30 days; * receipt of attenuated live vaccines in the past 14 days; * receipt of inactivated or subunit vaccines in the past 7 days; * according to the investigator's judgment, the subject has any other factors that are not suitable for participating in the clinical trial.

history of sars-cov-2 infection; have been received two doses of inactivated sars-cov-2 vaccine(coronavac)manufactured by sinovac research & development co., ltd at an interval of less than 6 months; have received received any circulating seasonal influenza vaccine; have received any pneumococcal vaccine within 5 years; history of asthma, history of allergy to the vaccine or vaccine components, or serious adverse reactions to the vaccine, such as urticaria, dyspnea, and angioedema; history of uncontrolled epilepsy and other serious neurological diseases such as transverse myelitis, guillain-barre syndrome, demyelinating diseases; history of fever at the time of vaccination, or acute onset of chronic disease, or severe uncontrolled chronic disease, or acute disease; already pregnant (including a positive urine pregnancy test) or are breastfeeding, planning to get pregnant within 3 months; receipt of other investigational drugs in the past 30 days; receipt of attenuated live vaccines in the past 14 days; receipt of inactivated or subunit vaccines in the past 7 days; according to the investigator's judgment, the subject has any other factors that are not suitable for participating in the clinical trial.

history of sars-cov-2 infection; have been received two doses of inactivated sars-cov-2 vaccine(coronavac)manufactured by sinovac research & development co., ltd at an interval of less than 6 months; have received received any circulating seasonal influenza vaccine; have received any pneumococcal vaccine within 5 years; history of asthma, history of allergy to the vaccine or vaccine components, or serious adverse reactions to the vaccine, such as urticaria, dyspnea, and angioedema; history of uncontrolled epilepsy and other serious neurological diseases such as transverse myelitis, guillain-barre syndrome, demyelinating diseases; history of fever at the time of vaccination, or acute onset of chronic disease, or severe uncontrolled chronic disease, or acute disease; already pregnant (including a positive urine pregnancy test) or are breastfeeding, planning to get pregnant within 3 months; receipt of other investigational drugs in the past 30 days; receipt of attenuated live vaccines in the past 14 days; receipt of inactivated or subunit vaccines in the past 7 days; according to the investigator's judgment, the subject has any other factors that are not suitable for participating in the clinical trial.