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Scientists still researching whether vaccine prevents COVID-19 transmission
Early research shows Pfizer vaccine could prevent COVID-19 transmission
Pfizer did not know whether Covid vaccine stopped transmission before rollout
UK researchers investigating if Moderna vaccine could prevent virus spread
Can vaccinated people still transmit COVID-19? | ABC News
COVID-19 Vaccines: Science and Safety
Preserving the Scientific Integrity of Getting to COVID-19 Vaccines
Can vaccinated people still spread the virus?
Pfizer did not know whether Covid vaccine stopped transmission before rollout
Do COVID-19 vaccines prevent transmission? CU Boulder kicks off national study
NIAID Soundbites: Novel Coronavirus Vaccine Research
Top Pfizer scientist discusses COVID-19 vaccine's efficacy and new variants
