Table 1. Sterile protection and median delay induced by ChAd63-MVA P. falciparum vaccines in inbred and outbred mice.
Vaccine | BALB/c | Median delayb | CD-1 | Median delayb |
---|---|---|---|---|
Protection (%)a | Protection (%)a | |||
PfCSP | 37.5**** | 1.47*** | 33.3** | 0.48* |
PfTRAP | 0 | −0.06 | 30* | 0.03 |
PfLSAP1 | 0 | 0.05 | 30 | 0 |
PfETRAMP5 | 0 | 0.12 | 10 | 0 |
PfCelTOS | 0 | −0.25* | 0 | 0.28 |
PfUIS3 | 12.5*** | 1.42** | 0 | 1.1 |
PfLSAP2 | 87.5**** | 1.09 | 70*** | 0.29 |
PfFalstatin | 0 | 0.59** | 10**** | 0.97**** |
PfLSA1 | 87.5**** | 2.13 | 87.5**** | 2 |
PfLSA3c | 12.5* | 0.35* | 0 | 0.22 |
aPercentage of vaccinated mice that were sterilely protected from challenge with 1000 chimeric sporozoites i.v., n = 8–10.
bThe median delay (days) in time to 1% parasitaemia, calculated by: (time to 1% of vaccinee) – (average time to 1% of naïve controls). The difference in survival was generated using Kaplan-Meier survival curves with statistical significance assessed using the Log-Rank (Mantel-Cox) Test, *p < 0.05-0.01 **p < 0.01-0.001 ***p < 0.001 ****p < 0.0001.
cFor PfLSA3 challenge, the chimeric sporozoite dose was increased to 2000 sporozoites per mouse in order to infect all naïve controls.