Fig. 5.

Extent and frequency of probable cross-reactions, represented as the average MFI ratio between heterologous, recipient, flavivirus antigen (”To”), and donor flavivirus (”From”) signal, for DENV WV + NS1 and for ZIKV NS1, respectively. Only cross-reactions of more than 100 MFI were included. Error bars denote standard error of mean. See legend of Fig. 1 for further explanations. Results from patients with known YFV and TBEV vaccinations were excluded