TY - CHAP M1 - Book, Section TI - COVID-19 infection risk increases as the time elapsed since receiving a 2nd dose of Pfizer vaccine increases A1 - Lau, Davy A1 - Chan, Alex PY - 2015 T2 - 2 Minute Medicine AB - SN - PB - McGraw Hill CY - New York, NY Y2 - 2024/03/28 UR - accessmedicina.mhmedical.com/updatesContent.aspx?gbosid=579211 ER -