Read the right most boxes in Figure 1 from top to bottom

1

C E + P S [ B ( t r e a t m e n t ) ]

2

C E + ( 1 P S ) P S C C

3

C E + ( 1 P S ) P S [ B ( n o i n f e c t i o n ) ]

4

C E + [ ( 1 P S ) 2 ( C A ) ] [ ( P A R ) ( C A R ) ]

5

C E + [ ( 1 P S ) 2 ( C A ) ] [ ( 1 P A R ) B ( t r e a t m e n t ) ]