Final answer:
HBV, HCV, and HDV are transmitted through blood and body fluids. HAV and HEV are spread via the fecal-oral route, and HDV requires HBV co-infection to occur. Medical personnel should take preventive measures and use vaccinations to reduce the risk of transmission.
Step-by-step explanation:
The Hepatitis B virus (HBV) and Hepatitis C virus (HCV), along with Hepatitis D virus (HDV), are transmitted via blood and body fluids, posing a risk of infection through direct contact with these fluids. Hepatitis A virus (HAV) and Hepatitis E virus (HEV), on the other hand, are primarily spread through the fecal-oral route. Notably, HDV is unique among these and can only propagate in the presence of HBV, meaning an individual must already be infected with HBV to become infected with HDV.
Health-care workers are advised to take precautions to prevent infection from viruses like HBV, HCV, and HDV, which can be transmitted through contact with infected bodily fluids. Vaccinations for HBV are available and are part of standard immunization schedules, offering protection against this virus which can lead to chronic conditions and even liver cancer.