Solar power is energy from the sun that is converted into thermal or electrical energy. Solar energy is the cleanest and most abundant renewable energy source available, and the U.S. has some of the richest solar resources in the world.olar power is energy from the sun that is converted into thermal or electrical energy. Solar energy is the cleanest and most abundant renewable energy source available, and the U.S. has some of the richest solar resources in the world.
Hepatitis B can be prevented with a safe and effective vaccine that has been available since 1982. In Australia, the hepatitis B vaccination program commenced in 1988, targeting groups at particularly high risk of infection.
These vaccines included 23 purified capsular polysaccharide antigens of Streptococcus pneumoniae and replaced the 14-valent polysaccharide vaccine licensed in 1977. 1981: The first hepatitis B viral vaccines, developed by Merck and also by the Pasteur Institute, were licensed.