Figure 1

NT₅₀ values against SARS-CoV-2 B.1 lineage in group A (A) and group B (B) in breastmilk samples at each timepoint. The boxes extend from the 25th to 75th percentiles, plots whiskers down to the minimum and up to the maximum value, each individual value is a point superimposed on the graph and the middle lines of each box shows medians. *p = 0.0159 (A), ^##p = 0.00180, **p = 0.0100 (B) (statistical test: Mann–Whitney U test).