Infectious disease expert Katherine L. Baumgarten, MD, explains when we can expect to reach heard immunity with the COVID-19 vaccine. To learn more about the COVID-19 vaccine, go to:

OB/GYN Melissa Jordan, MD, explains the differences between a multivitamin and a prenatal vitamin. Women of childbearing age, women who wish to become pregnant and expecting mothers should take a multivitamin or prenatal vitamin that contains folic acid, which can…