system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Transmission of hepatitis A virus occurs -
assistant
The correct answer is  The viruses shed in feces during the late incubation period and prodromal phase of illness REF:ANANTHANARAYANAN TTEXTBOOKOF MICROBIOLOGY 9EDITION PGNO.541