A law firm buy ofloxacin eye drops While MERS-CoV is part of the same family of viruses as SARS, it is genetically different from that virus, and a recent study comparing the two found that while they can cause similar symptoms, MERS Co-V infections can lead to respiratory failure about five days sooner than SARS infections. MERS Co-V, however, appears to be less infectious than SARS, although there have been some reports of limited person-to-person transmission of the virus.