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Table 3 Timeline (in days) of swab collection and epidemiologic information of five false negative discordant specimens

From: False negative rate of COVID-19 PCR testing: a discordant testing analysis

Patient − 5 − 4 − 3 − 2 − 1 0 1 2 3 4 5 6 7 8 9 10 11 Exposed to confirmed case? Healthcare worker? Community- or healthcare-acquired?
1       DSO S1    S2         Yes Yes Community-acquired
2       DSO   S1     S2       No Yes Community-acquired
3       DSO          S1   S2 Yes No Community-acquired
4       DSO, S1       S2       Unknown No Community-acquired
5 S1      DSO       S2       Yes Yes Community-acquired
  1. Negative numbers indicate days before DSO; day 0 indicates DSO; positive numbers indicate days post-DSO
  2. DSO date of symptom onset, S1 swab 1, S2 swab 2