Hepatitis A vaccine is a vaccine against the hepatitis A virus. The first successful vaccine against it was invented by Maurice Hilleman at Merck. The vaccine protects against the virus in more than 95% of cases and provides protection from the virus for at least fifteen years.he initial dose of the vaccine should be followed up by a booster six to twelve months later. Protection against hepatitis A begins approximately two to four weeks after the initial vaccination. Protection is proven to last at least 15 years and is estimated to last at least 25 years if the full course is administered.
The Channels--sandstone boulders on the Brumley Gap Trail in Washington County, Virginia. Find this Pin and more on Take a Hike! by bethoskinner. The Channels--sandstone boulders on the Brumley Gap Trail in Washington County, Virginia. See More
Pennington Gap is the most populous town in Lee County, Virginia, United States. The population was 1,781 at the 2000 census. The Lee Regional Medical Center was in Pennington Gap until it closed in October 2013, and the United States Penitentiary, Lee is nearby. The Pennington Gap post office was established in 1891.