| laboratory testing for middle east respiratory syndrome coronavirus, california, usa, 2013-2014. | since middle east respiratory syndrome coronavirus (mers-cov) first emerged, the california department of public health has coordinated efforts to identify possible cases in travelers to california, usa, from affected areas. during 2013-2014, the department investigated 54 travelers for mers-cov; none tested positive, but 32 (62%) of 52 travelers with suspected mers-cov had other respiratory viruses. | 2015 | 26291839 |