a significant trendp =0·0045
When BL samples were analysed, there was a significant trend for lower neutralisation titres with samples collected further from their symptom onset date ( Figure 2 a; β= -0·0057, 95% CI= -0·0095- -0·0018, p =0·0045).
When BL samples were analysed, there was a significant trend for lower neutralisation titres with samples collected further from their symptom onset date ( Figure 2 a; β= -0·0057, 95% CI= -0·0095- -0·0018, p =0·0045).