VIRAL HEPATITIS (PowerPoint) Shared by: ajalan847 DEFINITION •
An acute or sub-acute, Febrile, Infectious diseases
characterized by infectious diseases characterised by nausea
anorexia, dark coloured urine and yellowners of sclera or skin
caused by a group or skin caused by a group of viruses. TYPES •
At least six different types of viruses have been isolated –
Hepatitis ‘A’ Virus (HAV) – Hepatitis ‘B’ Virus (HBV) –
Hepatitis ‘c’ Virus (HCV) – Hepatitis ‘D’ Virus (HDV) –
Hepatitis ‘E’ Virus (HEV) – Hepatitis Non A,Non B Non C Virus
(HNANBNC) Distribution • World vide HAV infection is more common
in developing countries with poor sanitary conditions. HBV is
more common in some parts of Europe as well. HEPATITIS ‘A’ •
Synonym – Infectious Hepatitis • Agent – Entero virus type > 2
of picornaviridas family multiplies only in liver cells fairly
resistant to heat and chemicals. With stands temp of 60C for 1
hour, and chlorination at usual doses of domestic water supply.
Readily destroyed by formoline, boiling for 5