Figures & data
Figure 1. Transitions between classes when there is only one strain present. Notice this is a regular Susceptible-Infected-Recovered model.
Figure 2. Transitions between classes with two co-circulating strains.
Figure 3. Transitions between classes with three co-circulating strains.
Figure 4. Transitions between classes with four co-circulating strains.
Figure 5. Hypothetical phylogenetic tree of seven influenza strains.
Figure 6. Prevalence (measured in percentage of the population infected per day) for different values of non-negative ϵ, i.e. for the tropics and the northern hemisphere. The dashed vertical lines represent the middle of the winter of each year.
Figure 7. The herald wave phenomenon. A summer wave of a new strain predicts the strain that will dominate over the following winter. The value of seasonal forcing used is ϵ=0.20. Prevalence for each strain is measured in percentage of the population infected per day.
Figure 8. Average size and standard deviation of the major annual peak for different non-negative values of ϵ, i.e. for the tropics and the northern hemisphere.
Figure 9. Average day and standard deviation of the major annual peak for different non-negative values of ϵ, i.e. for the tropics and the northern hemisphere.
