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).
Questions about genital herpes or other sexually transmitted diseases are best addressed by a primary care physician or by a gynecologist. Valtrex is an antiviral medication used to treat herpes infections. The length of time Valtrex takes to act can depend upon whether the herpes infection for which it was prescribed is a new infection or a recurrence in someone who has already contracted the virus. In general, antiviral medications are usually prescribed for 7-10 days which is how long ulcers typically take to heal.