Table 2.

Mean proportion and 95% confidence interval (CI) of hosts infected and phage resisted in pairwise challenges in the time-shift experiment, broken down by the day from which the host or phage originated. (Values are rounded to two decimal places.)

host	phage	mean infectivity	infectivity 95% CI
t1	t1	0.98	0.80–1.00
t4	t1	0.17	0.01–0.20
t9	t1	0	0.00–0.00
t1	t4	0.90	0.80–1.00
t4	t4	0.74	0.67–0.97
t9	t4	0.01	0.00–0.19
t1	t9	0.85	0.80–0.99
t4	t9	0.79	0.78–0.98
t9	t9	0.36	0.07–0.56