Pre-Algebra on Khan Academy: No way, this isn't your run of the mill arithmetic. This is Pre-algebra. You're about to play with the professionals. Think of pre-algebra as a runway. You're the airplane and algebra is your sunny vacation destination. Without the runway you're not going anywhere.
Salmonella infection. Gastrointestinal problems can arise from time to time in infancy. They are usually caused by a viral infection in the stomach. Rotavirus and Norwalk virus infection are common causes of gastroenteritis in babies and children. Escherichia coli , campylobacter, and salmonella are important bacterial causes of gastroenteritis. Some of the more common causes of gastrointestinal upset are described below, along with their symptoms and treatment. Rotavirus infection Rotavirus is the most common cause of a gastrointestinal upset and severe diarrhea in babies and children.
Escherichia coli is the most common pathogen of bacterial infections worldwide. As many as 80% of urinary tract infections (UTIs) are caused by E. coli. In 1980, resistance to extended-spectrum cephalosporins was found for the first time in Enterobacteriaceae showing no chromosomally encoded AmpC overexpression.