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.
The cause of hepatitis A is an infection with the hepatitis A virus. The hepatitis A virus is commonly spread by eating or drinking something that has been contaminated with the stool of an infected person. Symptoms are not always present, but when they are, hepatitis A causes stomach pain, sudden fever, nausea, and jaundice, among other things. An Overview of Hepatitis A Causes There is only one cause of hepatitis A-- an infection with the hepatitis A virus (HAV). The hepatitis A virus is an RNA virus that belongs to the genus hepatovirus of the Picornaviridae family.