inclusion criteria: 1. healthy volunteers aged 18 to 75 years on the day of inclusion 2. participant signed informed consent 3. residing in philippines. 4. a participant can be included providing covid-19 polymerase chain reaction (pcr) test is negative at screening. 5. a participant can be included providing, the participant haven't received any vaccination against covid-19 in the past, or if the participant had already received any of the following licensed vaccines against covid-19: oxford/astrazeneca; pfizer/biontech; moderna; or j\&j/janssen, with the participants last dose received at least 6 months prior the inclusion in this trial.

inclusion criteria: 1. healthy volunteers aged 18 to 75 years on the day of inclusion 2. participant signed informed consent 3. residing in philippines. 4. a participant can be included providing covid-19 polymerase chain reaction (pcr) test is negative at screening. 5. a participant can be included providing, the participant haven't received any vaccination against covid-19 in the past, or if the participant had already received any of the following licensed vaccines against covid-19: oxford/astrazeneca; pfizer/biontech; moderna; or j\&j/janssen, with the participants last dose received at least 6 months prior the inclusion in this trial.

inclusion criteria: healthy volunteers aged 18 to 75 years on the day of inclusion participant signed informed consent residing in philippines. a participant can be included providing covid-19 polymerase chain reaction (pcr) test is negative at screening. a participant can be included providing, the participant haven't received any vaccination against covid-19 in the past, or if the participant had already received any of the following licensed vaccines against covid-19: oxford/astrazeneca; pfizer/biontech; moderna; or j&j/janssen, with the participants last dose received at least 6 months prior the inclusion in this trial.

inclusion criteria: healthy volunteers aged 18 to 75 years on the day of inclusion participant signed informed consent residing in philippines. a participant can be included providing covid-19 polymerase chain reaction (pcr) test is negative at screening. a participant can be included providing, the participant haven't received any vaccination against covid-19 in the past, or if the participant had already received any of the following licensed vaccines against covid-19: oxford/astrazeneca; pfizer/biontech; moderna; or j&j/janssen, with the participants last dose received at least 6 months prior the inclusion in this trial.

inclusion criteria: healthy volunteers aged 18 to 75 years on the day of inclusion participant signed informed consent residing in philippines. an individual can be included providing their covid-19 polymerase chain reaction (pcr) test is negative at screening. an individual can be included providing: they haven't received any vaccination against covid-19 in the past, or if they had already received any of the following licensed vaccines against covid-19: oxford/astrazeneca; pfizer/biontech; moderna; or j&j/janssen, with their last dose received at least 6 months prior the inclusion in this trial.

inclusion criteria: healthy volunteers aged 18 to 75 years on the day of inclusion participant signed informed consent residing in philippines. an individual can be included providing their covid-19 polymerase chain reaction (pcr) test is negative at screening. an individual can be included providing: they haven't received any vaccination against covid-19 in the past, or if they had already received any of the following licensed vaccines against covid-19: oxford/astrazeneca; pfizer/biontech; moderna; or j&j/janssen, with their last dose received at least 6 months prior the inclusion in this trial.