How many infants born in the United States are breastfed? The CDC National Immunization Survey is a nationally representative sample of the U.S. population that provides the percent of U.S. children who are breastfed by birth year. Rates are provided on breastfeeding initiation, duration, and exclusivity.
Valtrex (valacyclovir) is an antiviral medication used to treat infections with: 1  herpes zoster (shingles), 2  herpes simplex genitalis (genital herpes), 3  and herpes labialis (cold sores).
Valaciclovir (Valtrex) Valaciclovir (Valtrex) is an anti-viral drug. It is a pro-drug of aciclovir (Zovirax), meaning that it is broken down into aciclovir within the body. Valaciclovir produces higher blood levels of the active drug than is possible using the conventional tablet formulation of aciclovir.