Hepatitis
B
Virus
Vaccines
HBV
is
worldwide
cause
of
commonest
types
of
cancer,
primary
hepatic
carcinoma,
transmitted
through
contact
with
infected
blood
and
salvia.
The
problem
is
that
HBV
cannot
be
grown
in
culture
and
infects
only
man
and
higher
primates
like
chimpanzees.
It
as
partly
double
stranded
DNA.
The
purified
virus
formed
the
basis
of
a
unique
(literally
man
made)
killed
vaccine
that
provided
the
first
public
health
measure
against
this
serious
disease.
