Booklice, also called psocids, are not true lice. While they resemble lice in size and shape, booklice feed only on fungi or mold. If you find them in grain or other stored food products, it is an indication of high humidity which encourages mold growth.
Primary Cause of Hepatitis B. of transmission of an infectious agent by another person by one or more of the following: saliva, air, cough, fecal-oral route, surfaces, blood, needles, blood transfusions, sexual contact, mother to fetus, etc.
Primary Cause of Hepatitis A. The primary cause of Hepatitis A is the result: of eating food from an animal infected with an infectious agent, or from food that is contaminated from the food handler (who is infected with Hepatitis A), or from contaminated soil or water, or from toxins produced by an infectious organism.