Pfizer said its vaccine can protect against Covid-19 for at least six months, but experts say that protection will likely last longer.
원문출처 : https://www.cnn.com/videos/health/2021/04/01/pfizer-vaccine-protection-length-watt-dnt-tsr-vpx.cnn
원문출처 : https://www.cnn.com/videos/health/2021/04/01/pfizer-vaccine-protection-length-watt-dnt-tsr-vpx.cnn