Figure 1

(A) Mean subtype dynamics over the first 5 years after NPI implementation. The start of NPIs in all figures is indicated with a dashed black line. Top: The mean proportion of all cases caused by subtype A over time. Ribbon shows the 95% confidence interval. The tan line below shows NPI strength over time, as a proportion reduction in the transmission coefficient. NPI strength is higher in the first year than in year 2 or year 3 and varies between locations. (B) The mean proportion of the population infected with RSV over time across simulations. Subtype A is shown in green and subtype B in blue. In Finland-like scenarios (left), the first RSV season that occurs during the COVID-19 pandemic has a very small epidemic, made up almost entirely of subtype A. The second is more typical, and still primarily subtype A. In the UK-like scenarios (right) there is no RSV epidemic in the first season after NPIs are imposed, and a smaller than typical epidemic, made up of entirely subtype A, in the second season. The third is much larger, but still primarily subtype A.