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Table 3 Probabilities \({\pi }_{n}\) of clusters exceeding various sizes in at least one batch among all those administered in the United States as a function of estimated incidence assuming that the number of batches \(M=\mathrm{21,428}\)

From: Clinical management of an outbreak of nutritionally variant streptococcus endophthalmitis following intravitreal bevacizumab injection

Number of infections (n) Incidence
0.02% (1 in 5000) 0.05% (1 in 2000)
\(\ge 2\) 0.871362606 0.99999678
\(\ge 3\) 0.009256645 0.132251914
\(\ge 4\) 0.000031070 0.001194968