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.
History and Development of Flu Vaccines. In 1933, researchers discovered that viruses (influenza virus types A, B, and rarely C) cause influenza (flu). Prior to 1933, a bacterium named Haemophilus was thought to cause the flu. In 1938, Jonas Salk and Thomas Francis developed the first vaccine against flu viruses. This first flu vaccine was used to protect the U.S. military forces against the flu during World War II. Dr. Salk used his experience with influenza vaccine to develop an effective polio vaccine in 1952.