Figure 2
From: Association between viral seasonality and meteorological factors
Comparison of viral seasonality and mean relative humidity. X axis: Month/Year. Y axis: Monthly mean relative humidity (shaded area) over the study period and % positivity for each virus (coloured lines, scale differs between viruses). Horizontal line is the average relative humidity (81%) across the study period. The line representing the % positivity for each virus demonstrates viral seasonality through the year. It can be compared to the changes in mean relative humidity through the year. In November 2009, HMPV tests were positive 50% of the time, and hence that month’s results are high in comparison to all other results. The high prevalence of rhinovirus and HMPV in 2009 may reflect selective testing for these viruses when the test was introduced.
