The US is one step closer to having a third Covid-19 vaccine and it can't come soon enough.
원문출처 : https://www.cnn.com/2021/02/24/health/johnson--johnson-vaccine-5-questions-answered/index.html
원문출처 : https://www.cnn.com/2021/02/24/health/johnson--johnson-vaccine-5-questions-answered/index.html