Proportion of influenza B was inversely correlated with maximum ILI rate in the same season in the Northern and (with borderline significance) Southern hemispheres.
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Epidemiological and virological characteristics of influenza B: results of the Global Influenza B Study.
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The sentences
The P -value for the comparison of the median proportion of influenza B in the Southern Hemisphere versus the intertropical belt was borderline significant (0·07) and not significant for the other comparisons.