Fig. 1From: The immune evasion ability of Delta variant is comparable to that of Beta variant in South AfricaGiven the observed frequencies of different types of reinfections from Ref [6], we calculate the p-value under different hypothesized models with different value of \(\alpha ,b\) using the \({\chi }^{2}\)(chi-squared) test (see SI1). The rejection region falls in the region of āstronger Beta immune evasionā scenarioBack to article page