REED-FROST MODEL
 
 PROBABILITY OF INFECTION =  .100
 
    1 INITIAL INFECTIVES
 
    4 INITIAL SUSCEPTIBLES
 
 BASIC REPRODUCTION NUMBER =  .50
 
 REPRODUCTION NUMBER =  .40
 
 PROBABILITY OF NO SPREAD =  .656
 
 EPIDEMIC   INFECTED         CHAIN
 ---------------------------------------
     1          5         1  4
     2          5         1  4
     3          5         1  4
     4          5         1  4
     5          5         1  4
     6          5         1  4
     7          5         1  4
     8          5         1  4
     9          5         1  4
 --------------------------------------
 
 
 DISTRIBUTION OF NO. INFECTED
 
 INFECTED   FREQUENCY   PROPORTION
 ---------------------------------
     5           9        1.000
 ---------------------------------
 
 MEAN NUMBER OF INFECTED =  5.00