Fig. 2From: A novel sampling method to detect airborne influenza and other respiratory viruses in mechanically ventilated patients: a feasibility studySeasonal changes in the frequency of detected viruses. The recruitment period covered two flu seasons in the Southern hemisphere one inter-seasonal period. “2016” refers to the first flu season (early July–late October 2016). “2017” refers to the second flu season (late July–mid-October 2017). “Inter-flu season” refers to the period in between the two seasons (November 2016 to early July 2017). p values were calculated using Fisher exact test. No difference was detected in the distribution of detected viruses in the inspiratory filtersBack to article page