In its first FluView Report for the 2012-2013 flu season, which began on September 30—week 40 of the year, the Centers for Disease Control (CDC) has issued a media advisory stating that currently, the incidence of flu in the United States is low.
According to the CDC, the FluView is based on five categories of surveillance:
Under these criteria, the CDC reports that the incidence of outpatient visits for flu-like illness was 1.2 percent, which is below the baseline of 2.2 percent, and the proportion of deaths associated with pneumonia was below the epidemic threshold.
- Viral surveillance: U.S. World Health Organization (WHO) collaborating laboratories, the National Respiratory and Enteric Virus Surveillance System (NREVSS), and human infection with novel influenza A virus case reporting;
- Mortality: 122 Cities Mortality Reporting System and influenza-associated pediatric mortality;
- Hospitalizations: Influenza Hospitalization Network (FluSurv-NET) including the Emerging Infections Program (EIP),
- Outpatient illness surveillance: U.S. Outpatient Influenza-like Illness Surveillance Network (ILINet); and
- Summary of geographic spread of influenza: state and territorial epidemiologists’ reports.
Only one state, Wyoming, reported a local spread of disease, and the District of Columbia and 29 states reported sporadic activity. Other states and territories reported no activity or did not report.