inclusion criteria: * adult subjects (18 years old) having received a prime vaxzevria vaccination between 8 and 12 weeks before the screening visit * participants must provide consent indicating that he or she understands the purpose, procedures and potential risks and benefits of the study, and is willing to participate in the study. * subjects in good health or stable clinical situation. * participant is willing and able to adhere to the procedures specified in this protocol.

inclusion criteria: * adult subjects (18 years old) having received a prime vaxzevria vaccination between 8 and 12 weeks before the screening visit * participants must provide consent indicating that he or she understands the purpose, procedures and potential risks and benefits of the study, and is willing to participate in the study. * subjects in good health or stable clinical situation. * participant is willing and able to adhere to the procedures specified in this protocol.

inclusion criteria: adult subjects (18 years old) having received a prime vaxzevria vaccination between 8 and 12 weeks before the screening visit participants must provide consent indicating that he or she understands the purpose, procedures and potential risks and benefits of the study, and is willing to participate in the study. subjects in good health or stable clinical situation. participant is willing and able to adhere to the procedures specified in this protocol.

inclusion criteria: adult subjects (18 years old) having received a prime vaxzevria vaccination between 8 and 12 weeks before the screening visit participants must provide consent indicating that he or she understands the purpose, procedures and potential risks and benefits of the study, and is willing to participate in the study. subjects in good health or stable clinical situation. participant is willing and able to adhere to the procedures specified in this protocol.