| Discussion topic: | 
| COVID vaccines – is there a need for boosters in view of the emergence of variants and waning immunity? | 
| Session 3 : 17:00-19:00 - (english) | 
| 
 Chair: Professor Anna Durbin, Johns Hopkins Bloomberg School of Public Health, USA and Member of the ADVAC Scientific Committee Presenters: Dr Jakob Cramer, Coalition for Epidemic Preparedness Innovations (CEPI), London, UK Booster versus 2+1 primary immunisation vaccination: Does it matter? Professor Stanley Plotkin, University of Pennsylvania, USA Correlates of Protection as Indicators for Third Doses of COVID Vaccines  | 
COVID vaccines: is there a need for boosters in view of the emergence of variants and waning immunity? (S3)
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