Fig. 2
From: Challenge infection model for MERS-CoV based on naturally infected camels
MERS-CoV natural infection in dromedaries as a challenge model Five calves (closed circle symbols) were mixed with three naturally infected camels (black symbols). Nasal swabs were assessed for the presence of MERS-CoV UpE (a) and ORF1a (v) amplicons by RT-qPCR for 14 (and at 42) d.p.c. Pre-challenge Ct values for the naïve calves were also included (0 d.p.c.). Ct values are shown for individual camels. Dotted line represents the cutoff Ct value of 37. A value of 40 were given to all undetectable (negative) samples