IFNL1 and measles: We also observed a weak negative correlation between anti-N proteome microarray reactivity and secreted measles-specific IFN λ1 (r = −0.18, p-value = 0.03, data not shown), as well as between anti-N microarray reactivity (r = −0.18, p-value = 0.03), anti-P microarray reactivity (r = −0.17, p-value = 0.04) and anti-L-s3 microarray reactivity (r = −0.24, p-value = 0.003) and secreted IL-6 (data not shown).