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Table 6 Analysis of days participants designated as infected and according pCT contacts were tracking to check for false negative hits

From: Feasibility of digital contact tracing in low-income settings – pilot trial for a location-based DCT app

 

Day

Analysis

Infected #1

2

1 pCT contact was tracking on this day.

Contact started tracking 6 h after pCT hit.

3

0 pCT contacts were tracking on this day.

Infected #2

4

0 pCT contacts were tracking on this day.

7

0 pCT contacts on this day.

8

3 pCT contacts were tracking on this day.

Of those 1 started tracking > 1 h after pCT hit and 2 were recorded via aCT (matches).

Infected #4

8

6 pCT contacts were tracking on this day.

Of those 5 started tracking > 1 h after pCT hits and 1 was recorded via aCT (match).

Infected #6

11

16 pCT contacts were tracking on this day. Infected #6 tracked for one minute, which was > 1 h before or after pCT hits.

Infected #7

12

0 pCT contacts on this day. During 17:15 hours of tracking no aCT- hit was recorded. (see Additional file 5)