The 1918 flu pandemic, commonly referred to as the Spanish flu, was a category 5 influenza pandemic caused by an unusually severe and deadly Influenza A virus strain of subtype H1N1.
Project Lead The Way (PLTW) is an American nonprofit organization that develops STEM curricula for use by US elementary, middle, and high schools.
Red blood cells carry oxygen to all parts of the body. When your HCT is low, you may feel tired or have little energy. PLTS measures the level of platelets in your blood. Platelet cells form blood clots when your body is injured.