Lithonia High School Named Georgia AP Honor School. AP STEM Schools are schools with students testing in at least two AP math courses and two AP science courses (AP Calculus AB, AB Calculus BC, AP Statistics, AP Biology, AP Chemistry, AP Environmental Science, AP Physics B, AP Physics C, AP Computer Science)
The first pneumococcal vaccine was developed in the 1980s. They are on the World Health Organization's List of Essential Medicines, the most important medication needed in a basic health system. The wholesale cost in the developing world is about US$17 per dose as of 2014.
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.