Figure 1
From: Association between viral seasonality and meteorological factors
Comparison of viral seasonality, mean temperature and mean dew point. X axis: Month/Year Y axis: Monthly mean temperature and dew points (shaded area) over the study period and % positivity for each virus (coloured lines, scale differs between viruses). Horizontal line is the average temperature (9.2 °C) 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 temperature and dew point 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.
