In a recent study by Kier, Cheng and Testa, simulations were carried out to monitor and quantify the emergence of a collective phenomenon, namely percolation, in a many-particle system modeled by cellular automata (CA). In the present study, the same setup was used to monitor the counterpart to collective behavior, namely the behavior of individual particles, as modeled by occupied cells in the...

Under 5 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 8.3 5 to 9 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 8.6 10 to 14 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 8.1 15 to 19 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 5.3 20 to 24 years . . . . . . . . . . . . . . . . . . . . . . ....

During susceptibility testing of 743 isolates of Mycobacterium tuberculosis to pyrazinamide (PZA) using the Bactec 960 system, 57 (7.7%) isolates showed PZA resistance. Repeat testing of resistant isolates with the Bactec 460 reference method confirmed 33 (4.4%) of these isolates as resistant, and 24 (3.2%) were susceptible. Erroneous results for resistance with the Bactec 960 were confirmed by...

Under 5 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 4.9 5 to 9 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 6.0 10 to 14 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 8.4 15 to 19 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 6.5 20 to 24 years . . . . . . . . . . . . . . . . . . . . . . ....

Under 5 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.8 5 to 9 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 10.4 10 to 14 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 9.3 15 to 19 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 7.7 20 to 24 years . . . . . . . . . . . . . . . . . . . . . . ...

Under 5 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.8 5 to 9 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 4.6 10 to 14 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 9.0 15 to 19 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 9.9 20 to 24 years . . . . . . . . . . . . . . . . . . . . . . ....