Time-to-1% values in naïve and vaccinated mice (BALB/c, 2207 parasite).

Daily blood smears of naïve (n = 84, blue bars) and vaccinated (n = 269, red bars) mice challenged with varying quantities of sporozoites were used to calculate time to reach 1% blood-stage parasitaemia by linear regression analysis. (A)shows the frequency of mice reaching 1% blood stage parasitaemia at each time period (0.1 d intervals) between 5 days and 13 days post-infection. (B) represents the same data as a Kaplan Meier plot.