The CDC reported on Saturday that an Illinois man likely contracted Middle East Respiratory Syndrome Coronavirus (MERS-CoV) from another patient in Indiana.
The Illinois resident came into contact twice with the man who shortly after became the first confirmed case of MERS-CoV in the U.S. The Illinois man never sought medical treatment, but local healthcare professionals have monitored his condition every day since May 3 as part of an ongoing investigation into the first patient's case.
Laboratory tests confirmed on May 16 that the Illinois resident had a past infection from MERS-CoV and likely developed antibodies to the disease. The CDC reported that he is feeling well.
The CDC said the newly confirmed case of MERS-CoV does not change its recommendations for preventing the spread of the disease.
"It's possible that as the investigation continues others may also test positive for MERS-CoV infection but not get sick," David Swerdlow, who is leading the CDC's MERS-CoV response, said. "Along with state and local health experts, CDC will investigate those initial cases and if new information is learned that requires us to change our prevention recommendations, we can do so."
Most cases of MERS-CoV are characterized by an acute respiratory illness with a cough, fever or shortness of breath. More than 450 cases of the disease were confirmed in Saudi Arabia as of May of this year. Approximately 30 percent of those who were confirmed to have the disease died.