​ Conditions: Epidemic Meningitis

Interventions: Other: Previously vaccinated with MCV4 (CanSino); Other: Previously vaccinated with MPSV4 (LvZhu)

Sponsors: CanSino Biologics Inc.

Not yet recruiting Conditions: Epidemic Meningitis
Interventions: Other: Previously vaccinated with MCV4 (CanSino); Other: Previously vaccinated with MPSV4 (LvZhu)
Sponsors: CanSino Biologics Inc.
Not yet recruiting