I've performed a two-sided Fisher's exact test on the following data, and the results include Infinity for the upper confidence interval and odds ratio. Are these results erroneous, and if not how do I interpret them? I've done a bunch of searching and reading, but have a hard time wrapping my head around why the infinite results occur. When I add 0.5 to each cell I still obtain infinity.
Fisher's Exact Test for Count Data p-value = 0.002719 alternative hypothesis: true odds ratio is not equal to 1 95 percent confidence interval: 2.196186 Inf sample estimates: odds ratio Inf
Any insight is greatly appreciated