Throughout the world, the virus hepatitis B has recently become a major health problem.

A18 Warning on Hepatitis C Thousands of people will soon receive letters warning that they may have caught the liver virus hepatitis C from transfusions before 1992.

A22 Home Test for Liver Virus The F.D.A. has approved the first device for home testing for the dangerous liver virus hepatitis C, which affects about 4 million Americans.

These viral families contain the viruses hepatitis C, influenza A and B, HIV 1 and 2, measles, respiratory syncytial virus and pichinde virus, which is a model for the deadly Lassa virus.

Hepatitis C: La hepatitis C es una enfermedad del hígado causada por el virus hepatitis C (VHC) que se encuentra en la sangre de las personas que tienen la enfermedad.