<s>
In	O
epidemiology	O
,	O
the	O
next-generation	B-Algorithm
matrix	I-Algorithm
is	O
used	O
to	O
derive	O
the	O
basic	O
reproduction	O
number	O
,	O
for	O
a	O
compartmental	O
model	O
of	O
the	O
spread	O
of	O
infectious	O
diseases	O
.	O
</s>
<s>
The	O
method	O
to	O
compute	O
the	O
basic	O
reproduction	O
ratio	O
using	O
the	O
next-generation	B-Algorithm
matrix	I-Algorithm
is	O
given	O
by	O
Diekmann	O
et	O
al	O
.	O
</s>
<s>
To	O
calculate	O
the	O
basic	O
reproduction	O
number	O
by	O
using	O
a	O
next-generation	B-Algorithm
matrix	I-Algorithm
,	O
the	O
whole	O
population	O
is	O
divided	O
into	O
compartments	O
in	O
which	O
there	O
are	O
infected	O
compartments	O
.	O
</s>
<s>
Now	O
,	O
the	O
matrix	O
is	O
known	O
as	O
the	O
next-generation	B-Algorithm
matrix	I-Algorithm
.	O
</s>
