From mid-August to November 20, 2014, CDC or state public health laboratories have confirmed a total of 1,121 people in 47 states and the District of Columbia with respiratory illness caused by EV-D68.*
Reports from most states over the last couple months have indicated reduced EV-D68-like illness activity. However, EV-D68 infections could continue through late fall. Over the last two weeks that CDC obtained reports, some states reported increasing respiratory illness activity. However, since other seasonal respiratory viruses, such as influenza and respiratory syncytial virus, are starting to circulate now, we are not sure if this increase is caused by these seasonal viruses or EV-D68. See Activity of Enterovirus D68-like Illness in States.
Every year, enteroviruses and rhinoviruses cause millions of respiratory illnesses in children. This year, EV-D68 has been the most common type of enterovirus identified, leading to increases in illnesses among children and affecting those with asthma most severely. Other rhinoviruses and enteroviruses continue to be detected as well.
CDC has received substantially more specimens for enterovirus lab testing than usual this year, due to the large outbreak of EV-D68 and related hospitalizations.
CDC has prioritized testing of specimens from children with severe respiratory illness. There are likely many children affected with milder forms of illness.
Of the more than 2,500 specimens tested by the CDC lab, about 40% have tested positive for EV-D68. About one third have tested positive for an enterovirus or rhinovirus other than EV-D68.
Almost all the confirmed cases this year of EV-D68 infection have been among children. Many of the children had asthma or a history of wheezing.

EV-D68 has been detected in specimens from 12* patients who died and had samples submitted for testing. CDC is reporting test results to state health departments as we obtain them.
State and local officials have the authority to determine the cause of death, including the role that EV-D68 may have played. They also have the authority to determine the appropriate information to release, and the time to release it. CDC will defer to states to provide this information.
*Investigations are ongoing; CDC reviews and updates available data every Thursday.