The severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) virus and resulting COVID‐19 pandemic present important diagnostic evaluation challenges. These range from understanding the value of signs and symptoms in predicting possible infection, assessing whether existing biochemical and imaging tests can identify infection and people needing critical care, and evaluating whether new diagnos...
Vitamin D and Bone Health What is Vitamin D? Vitamin D, first identified as a vitamin early in the 20th century, is now recognized as a prohormone. It is a group of fat-soluble secosteroids that is naturally present in very few foods, responsible for increasing intestinal absorption of calcium, magnesium, and phosphate, and many other biological effects. Vitamin D plays an important ro...
Preface Influenza is a seasonal respiratory illness that occurs annually, usually peaking in winter. It affects 5-10% of adults and 20-30% of children each year.[1] This common, yet serious, infectious disease, represente a significant threat to public health. Globally, annual influenza epidemics are estimated to result in about 3 to 5 million cases of severe illness, millions of hospita...