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Fig. 2 | BMC Medicine

Fig. 2

From: SARS-CoV-2 exposure in Malawian blood donors: an analysis of seroprevalence and variant dynamics between January 2020 and July 2021

Fig. 2

Flexible seroprevalence models. The model fits provide a smoothed estimate of the seroprevalence over time (January 2020 to July 2021) for each location. A Balaka. B Blantyre. C Mzuzu. D Lilongwe. The orange line is the line of best fit for the empirical data, using a smooth generalised additive model, along with light orange shading indicating 95% CI. Black dots (together with 95% CI) are estimated seroprevalence at each time point (months), adjusted for assay sensitivity and specificity. Grey dots (top and bottom of figures) show the individual-level data, which are either positive (1) or negative (0) for the detection of anti-SARS-CoV-2 receptor-binding domain (RBD) antibody

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